Skip to main content
Natural Inquirer - Homepage

Free Science Materials for K-12 Students

  • Bookmarks
  • Cart0
  • Account
  • Find Outdoors
  • USDA
  • USDA Forest Service logo.
Natural Inquirer - Homepage
  • About
    • About Natural Inquirer
    • Team
    • Partners
    • Press & Past Events
    • Contact Us
  • Resources
    • View All Resources
    • Grade Levels
      • PreK - 2nd Grade
      • Upper Elementary
      • Middle School
      • High School
      • All Grade Levels
    • Resource Types
      • Articles
      • Activities
      • Collector Cards
      • Coloring Pages
      • Videos
      • Lesson Plans
      • Scientists & Collaborators
      • Spotlights
      • Virtual Learning Adventures
      • All Types
    • Resource Topics
      • Wilderness
      • Wildlife
      • Water
      • Active Forest Management
      • Social Science
      • Fire
      • Agriculture
      • Recreation
      • Carbon
      • Insects
      • All Topics
    • Special Collections
      • Artemis Moon Trees
      • Experimental Forests & Ranges
      • Project Learning Tree Connections
      • Globe Connections
      • Designing Your Own Study
      • Smokey Bear
      • Spanish Editions
      • Woodsy Owl
      • World's Forests
      • All Special Collections
  • Order Materials
    • View All Products
    • Journals & Monographs
    • Readers
    • Collector Card Packs
    • Coloring Books
  • Educators
    • For Educators
      • Educator Guide
      • Educator Blog
      • Newsletter
    • Classroom Ready Resources
      • Lesson Plans
      • Activities
      • Learning Modules
      • GLOBE Connections
      • Project Learning Tree
    • Get Involved
      • Volunteer Your Classroom
  • Virtual Learning Adventures
  • Bookmarks
  • Cart
  • Account
  • About
    • About Natural Inquirer
    • Team
    • Partners
    • Press & Past Events
    • Contact
  • Resources
        • View All Resources
        • By Grade
          • PreK - 2nd
          • Upper Elementary
          • Middle School
          • High School
        • By Type
          • Articles
          • Activities
          • Collector Cards
          • Coloring Pages
          • Videos
          • Lesson Plans
          • Learning Modules
          • Journals
          • Monographs
          • Readers
          • Scientists & Collaborators
          • Spotlights
          • Virtual Learning Adventures
          • All Types
        • By Topic
          • Agriculture
          • Active Forest Management
          • Carbon
          • Fire
          • Insects
          • Recreation
          • Social Science
          • Water
          • Wilderness
          • Wildlife
          • All Topics
        • Special Collections
          • Artemis Moon Trees
          • Experimental Forests and Ranges
          • GLOBE Connections
          • Project Learning Tree Connections
          • Designing Your Own Study
          • Smokey Bear
          • Spanish Editions
          • Woodsy Owl
          • World's Forests
          • All Special Collections
  • Order Materials
        • Download all resources - FREE!

          *Due to recent government funding changes, we currently are only able to process bulk orders of 20 or more. We hope that we will be able to resolve this issue in the near future. In the meantime, please feel free to download our resources and explore the website for many great lesson plans and activities.

          View All Products
        • Journals & Monographs

          Journals focus on a group of related articles, while monographs focus on one research article.

          Journals & Monographs
        • Collector Cards

          Learn about possible career opportunities in science!

          View All Card Packs
        • Readers

          For a PreK-2nd grade audience, each Reader focuses on one Forest Service scientist and their research.

          View All Readers
        • Coloring and Activity Books

          Learn more about science through our coloring and outdoor activity books!

          View All Coloring and Activity Books
  • Educators
        • Overview
          • General Educator Guide
          • PreK-2nd Grade Guide
          • Upper Elementary School Guide
          • Middle and High School Guide
          • Non-Formal Education Guide
        • Classroom Ready Resources
          • Learning Modules
          • Lesson Plans
          • Explore All
        • Order Materials
          • View All Free Products
          • Contact Us
        • For Educators
          • Educator Blog
          • Newsletter
          • Project Learning Tree
        • Get Involved
          • Volunteer Your Classroom
  • Virtual Learning Adventures

Breadcrumb

  • Home
  • Resources
  • Invasion of the Song Snatcher! The Influence of Invasive Spotted Knapweed on Chipping Sparrow Song Diversity
Cover for the 'Invasion of the Song Snatcher' article. The main image is a photo of a Chipping Sparrow chirping on a branch.
Bookmark
Please login to bookmark Close

Please login to bookmark


Lost your password?

No account yet? Register

Invasion of the Song Snatcher! The Influence of Invasive Spotted Knapweed on Chipping Sparrow Song Diversity

  • Article
  • Middle School
  • 1 Classroom Period
  • Wildlife
  • Biodiversity
  • Bird Song
  • Chipping Sparrow
  • Habitat
  • Indicator
  • Invasive Species
  • Lolo National Forest
  • Migratory Birds
  • Spotted Knapweed
Cover for the 'Invasion of the Song Snatcher' article. The main image is a photo of a Chipping Sparrow chirping on a branch.
SHARE
  • Copy Link
  • Facebook
  • X (Twitter)
  • Pinterest
  • Email
  • Google Classroom

Invasive species such as spotted knapweed can have an effect on a habitat and animals in that habitat. In this study, the scientists wanted to determine how spotted knapweed affects migratory songbirds and their songs. In particular, the scientists studied chipping sparrows.

 

Invasion of the Song Snatcher! The Influence of Invasive Spotted Knapweed on Chipping Sparrow Song Diversity

Jump To

  • Meet the Scientists
  • Thinking About Science
  • Thinking About the Environment
  • Introduction
  • Citizen Science Connections
  • What's In a Song?
  • Methods
  • Findings
  • Discussion

Meet the Scientists

Yvette Ortega

Ecologist

“I grew up in southern California in a big city. My first biology job took me all the way to the wilds of Alaska. That convinced me that I was... Read Full Bio

Aubree Benson

Fisheries biologist

In the photo, I am holding a large (7 pound) bull trout. We captured this trout below the Emily-A-Dam, which is in the background. The dam was on the Clearwater... Read Full Bio

Erick Greene

Wildlife Biologist

My favorite science experiences have always been in the field observing fascinating things in nature. These experiences are what give me ideas about interesting things that might be going on,... Read Full Bio

What Kinds of Scientists Did This Research?

  • Ecologist: This scientist studies the relationship of living things with their living and nonliving environment.
  • Fisheries biologist: This scientist studies fish living in the wild, including what they eat, their habitat, and how they interact with their environment.
  • Wildlife biologist: This scientist studies animals living in the wild, including what they eat, their habitat, and how they interact with their environment.

Thinking About Science

Scientists often find a particular topic that interests them and study this topic in depth. As scientists study one topic more closely, they come up with more detailed and specific questions for which they would like to know the answers. Sometimes their discoveries about one topic help inform scientists about another related topic.

 

In this study, the scientists were interested in learning more about how an invasive plant species was affecting a particular bird species and the songs of those birds. The scientists thought this specific information gathered from this research could help them understand the particular bird and invasive plant. The scientists also thought that this research could help them understand the response of other songbird populations to changes in their habitat quality.


Thinking About the Environment

Invasive species are any plants, animals, or organisms that are not native to the ecosystem they are in and are likely to cause harm to the environment, the economy, or human health. In this study, scientists were concerned with an invasive plant called spotted knapweed (figure 1).

 

Spotted knapweed was accidentally brought to the United States from Eastern Europe in the late 1800s. The spotted knapweed seeds were mixed in with alfalfa and clover seeds. Spotted knapweed can invade a wide variety of habitats from open areas like grasslands to those with more dense vegetation like forests (figure 2). The roots of spotted knapweed give off a chemical that stops the growth of other plants. Spotted knapweed also is a strong competitor for resources such as water and space and displaces the native plants in this way.

 

When spotted knapweed spreads, native plants can no longer grow in that area and the plant diversity is greatly reduced. Many animals depend on a diversity of plants for food and habitat. Spotted knapweed is a poor substitute for the habitat and food needs of these animals. The invasion of spotted knapweed, therefore, negatively impacts the food and habitat options for these animals.

A spotted knapweed in bloom

Figure 1. Spotted knapweed has purple flowers when in bloom. Photo courtesy of John Cardina, Utah State University, and http://www.bugwood.org.

Bushed of spotted knapweed off of a highway

Figure 2. Spotted knapweed often invades roadside areas. Photo courtesy of Steve Dewey, Utah State University, and http://www.bugwood.org.


Introduction

Invasive species such as spotted knapweed can have an effect on a habitat and animals in that habitat (Read “Thinking About the Environment” for more information). In this study, the scientists wanted to determine how spotted knapweed affects migratory songbirds and their songs. In particular, the scientists studied chipping sparrows (figure 3). Chipping sparrows migrate to different areas for reproduction. These areas are called breeding grounds.

 

A chirping sparrow in a nest in a tree
Figure 3. Chipping sparrows can be found around trees, although they spend a lot of time foraging on the ground. Chipping sparrows mainly eat the seeds of a variety of grasses and herbs. During the breeding season, songbirds such as the chipping sparrow add insects to their diet to give them an extra boost of energy for reproduction. Photo courtesy of Aubree Benson.

 

In migratory songbirds, it is common for the yearling male bird to adopt the song of the birds that are already in the breeding area. Chipping sparrows tend to match the songs of the older chipping sparrows at the site to which they have migrated. The yearlings typically imitate the song of the older birds because the older birds arrived on the breeding grounds first and already have a clear song (figures 4 and 5).

 

Four bright blue eggs in a nest in a tree

Figure 4. Chipping sparrows lay beautiful light blue eggs with dark speckles. Photo courtesy of Aubree Benson.

Young birds in a nest

Figure 5. Recently hatched chipping sparrow waiting
for food. Photo courtesy of Aubree Benson.

Citizen Science Connections

A Woodsy Owl mascot
Woodsy Owl’s message is “Give a hoot, don’t pollute”. Forest Service photo by Tanya Flores.

Do invasive species live in your schoolyard or backyard? Help scientists track the spread of invasive species across the United States! Citizen scientists can use the Early Detection & Distribution Mapping System (EDDMapS). Visit http://www.eddmaps.org/ and BugwoodApps to learn more and contribute to this research.

EDDMapS lets citizen scientists:

    • Learn about invasive species;
    • Report invasive species observations;
    • Review maps of invasive species

EDDMapS is a project launched by the University of Georgia. It now has a database of more than 2.5 million invasive species sightings made by both scientists and citizen scientists.

The EDDMapS logo

The scientists wanted to know if the chipping sparrows still had a similar song adoption process in areas heavily invaded by spotted knapweed. The scientists hypothesized that the number of older birds would decrease in heavily invaded spotted knapweed areas, compared with the number of yearling birds.

 

Further, the scientists hypothesized that this decrease in the number of old compared to yearling birds would lead to increased song similarity among birds in the area. They believed there would be fewer song options for yearling birds to imitate.

 

Increased song similarity may cause the habitat to be less suitable for chipping sparrows. One reason the habitat may decline in suitability is that female birds may avoid the habitat because of lack of song variety from males. Song variety from male birds can indicate the health of the male and may indicate the success of offspring from that bird.

 

The scientists collected data on chipping sparrow songs, gender, and numbers to determine whether their hypotheses were correct. The scientists wanted to compare this information in areas that were invaded with knapweed and areas that had native vegetation.

Reflection Section

Please enable JavaScript in your browser to complete this form.

Click submit to view the answers.

Form entries are not stored.

Loading

What's In a Song?

As humans, we can talk, write, and sing to communicate with others. Birds cannot talk or write. Birds rely mostly on singing and bird calls to communicate with other birds.

Northern mocking bird on a branch
Northern mockingbirds imitate the songs of other birds, other animals, and even car alarms. Photo by Budd Titlow of Naturegraphs

Some birds can only learn one song. Other birds can learn over 200 songs, such as the northern mockingbird.

Most singing birds that you hear are male birds. Like the songs that we listen to on our electronic devices, each song has a message. The male birds sing to send a message to females or other males in the area. Singing can attract females. It can also help warn other male birds to avoid the singing bird’s territory. Bird songs are often loudest in the morning, but scientists are not sure why. Why do you think that bird songs are loudest in the morning?

For additional information on bird songs, visit http://biology. allaboutbirds.org/birdsong/.


Methods

The scientists studied six plots in the Lolo National Forest in western Montana (figure 6).

 

A map of the U.S. highlighting Lola National Forest
Figure 6. Lolo National Forest is located in western Montana and consists of 2 million acres. Map by Carey Burda and Stephanie Pfeiffer.

 

Three of the plots had native vegetation and three of the plots were heavily invaded by spotted knapweed (figures 7a and 7b). The scientists collected data in 2005 and 2006.

 

Two plots of land. One has native vegetation and flowers, the other has knapweed with no flowers.
Figure 7a. A plot with native vegetation. Figure 7b. A plot invaded by spotted knapweed.
Photos courtesy of Yvette Ortega.

 

The scientists lured chipping sparrows into mist nets by playing bird songs and calls that had been recorded in the area (figure 8). Each bird was marked with a unique combination of one aluminum band and three color bands (figure 9).

 

Two scientist working on removing a bird from a mist net

Figure 8. Mist nets help scientists capture and release birds without harming them. These scientists are removing a bird from a mist net so they can study the bird. Photo courtesy of Mariko Yamasaki.

A person holding a bird with small bands on its legs

Figure 9. Notice the tiny bands on the bird’s leg. The bands do not hurt the bird and help the scientists keep track of the different birds. Photo courtesy of Aubree Benson.

The scientists used information about molting and plumage characteristics to determine whether the bird was a yearling or an older bird. Yearling birds spend part of their early life with a different plumage than older birds. As young birds move through their life cycle, molting occurs and yearling plumage is replaced with adult plumage. Observers conducted searches twice a week for banded birds on the study plots. The scientists recorded the information from these searches (figure 10).

 

A scientist inspecting a bird
Figure 10. The scientists inspected the birds and
made notes and observations about them. Photo courtesy of Aubree Benson.

 

The scientists also recorded the bird songs during the breeding season each year (figure 11). Only one of the scientists measured and made notes about all of the bird songs. The scientists then took the data they gathered and used computer software to help them analyze the information.

Aubree holding up a recording device outside
Figure 11. Aubree Benson recorded the songs
of the chipping sparrows. Photo courtesy of
Jennifer Steffan.

Reflection Section

Please enable JavaScript in your browser to complete this form.

Click submit to view the answers.

Form entries are not stored.

Loading

Citizen Science Connections

A Woodsy Owl mascot
Woodsy Owl’s message is “Give a hoot, don’t pollute” (Forest Service photo by Tanya Flores)

Birds are an important part of every ecosystem. The presence or quantity of birds in a location can tell scientists a lot about the health of birds and the environment. Using eBird (http://www.ebird.org), scientists are asking citizen scientists to collect data about where and when they see birds. The study of birds is called ornithology (or nə thä lə jē).

eBird lets citizen scientists:

    • Record the birds they see;
    • Keep track of their bird lists;
    • Explore maps;
    • Share their sightings;
    • Contribute to science.

eBird is a project created by the Cornell Lab of Ornithology. The eBird database collects millions of citizen scientist bird sightings each month for use by scientists, land managers, and other citizen scientists. Join the effort today!

eBird logo


Findings

The scientists found that fewer birds returned to the sites invaded by spotted knapweed (figure 12). For birds, returning to a given site year after year is closely linked to breeding success.

 

A bar graph showing invasive vs native birds
Figure 12. The scientists found that fewer birds returned to invaded areas as compared to returning to areas with native plants. Graph by Stephanie Pfeiffer.

 

Overall, the scientists recorded more than 96 percent of the males’ songs. Of those birds, none of them changed their song between Citizen Science Connections years. The scientists also found that song similarity among individuals was higher for
yearling birds than older birds.

 

Song similarity among male birds was higher in the areas invaded by spotted knapweed. The diversity of song types was lower in spotted knapweed areas (figure 13).

 

A bar graph showing the number of song types over time in invaded and native areas
Figure 13. The number of song types was also lower in native compared to invaded areas. Graph by Stephanie Pfeiffer.

 

 

Reflection Section

Please enable JavaScript in your browser to complete this form.

Click submit to view the answers.

Form entries are not stored.

Loading

Discussion

The scientists’ findings supported their hypothesis that invasion of spotted knapweed has a negative effect on chipping sparrow populations. An invasion of spotted knapweed reduces the quality of the bird breeding area in multiple ways. The presence of spotted knapweed decreases the food resources available to the birds. Once spotted knapweed has taken over a breeding area, birds are less likely to return from year to year. Yearling birds tend to take the place of the birds that have left the invaded area.

 

With fewer older birds around, the chipping sparrows have fewer songs to imitate. Therefore, song similarity at the spotted knapweed sites increases leading to a reduction in the number of song types sung. The increase in song similarity may deter female birds from this site. They may be deterred because fewer mating choices are available to them compared to the native-plant breeding sites. Overall, the scientists believe that bird songs may serve as an important indicator of habitat quality and population status for a variety of migratory songbirds.

Reflection Section

Please enable JavaScript in your browser to complete this form.

Click submit to view the answers.

Form entries are not stored.

Loading

Adapted from Ortega, Y.K.; Benson, A.; Greene, E. 2014. Invasive plant erodes local song diversity in a migratory passerine. Ecology. 95: 458–465. http://www.fs.fed.us/rm/pubs_other/rmrs_2014_ortega_y003.pdf

The cover for Citizen Science Journal. The main image is a collage of photos of two different group of students. The top image the group are in a forest and all looking through binoculars, and the bottom image the group is wearing green shirts.

Part Of

Citizen Science - Vol. 19 No. 1

Explore Full Journal
SHARE
  • Copy Link
  • Facebook
  • X (Twitter)
  • Pinterest
  • Email
  • Google Classroom
Read Distraction Free Download PDF
  • PDF preview of 'Invasion of the Song Snatcher' FACTivity.
    The question you will answer in this FACTivity is: How many birds do I notice in my schoolyard habitat? Materials: Bird Observation Tally Sheet (included) Pencil Clip board Binoculars (optional)...

    FACTivity – Invasion of the Song Snatcher

    • Activity
    • Middle School
    • 1 Classroom Period
    • Wildlife
    • Bird Watching
    • Birds
    • Data Collection
    • Field Guide
    • Habitat
    • Outdoor Activity
    The question you will answer in this FACTivity is: How many birds do I notice in my schoolyard habitat? Materials: Bird Observation Tally Sheet (included) Pencil Clip board Binoculars (optional)...
    • Explore Activity
    • Download FACTivity (PDF)
    • Explore Activity
    • Download FACTivity (PDF)

    Part Of

    Invasion of the Song Snatcher! The Influence of Invasive Spotted Knapweed on Chipping Sparrow Song Diversity

  • PDF preview of the alternate FACTivity for "Invasion of the Song Snatcher"
    The questions you will answer in this FACTivity are: What similarities and differences do you notice between bird songs? How does the way a song sounds have an effect on...

    Alternate FACTivity – Invasion of the Song Catcher

    • Activity
    • Middle School
    • 1 Classroom Period
    • Wildlife
    • Bird Song
    • Birds
    • Communication
    • Graphic Organizer
    • Music
    • Spectrogram
    The questions you will answer in this FACTivity are: What similarities and differences do you notice between bird songs? How does the way a song sounds have an effect on...
    • Explore Activity
    • Download FACTivity (PDF)
    • Explore Activity
    • Download FACTivity (PDF)

    Part Of

    Invasion of the Song Snatcher! The Influence of Invasive Spotted Knapweed on Chipping Sparrow Song Diversity

Download PDF

Jump To

  • Education Standards
  • Educator Guide
  • Lesson Plans
  • Education Files
  • Project Learning Tree

Standards addressed in this Article:

The Next Generation Science Standards (NGSS) are a set of K-12 science education standards emphasizing inquiry-based learning, real-world applications, and integrating engineering practices, aiming to deepen understanding of science while promoting critical thinking and problem-solving skills.
  • ESS3.C-M1
    Human activities have significantly altered the biosphere, sometimes damaging or destroying natural habitats and causing the extinction of other species. But changes to Earth’s environments can have different impacts (negative and positive) for different living things.
  • LS1.B-M1
    Organisms reproduce, either sexually or asexually, and transfer their genetic information to their offspring.
  • LS1.B-M2
    Animals engage in characteristic behaviors that increase the odds of reproduction.
  • LS2.A-M1
    Organisms, and populations of organisms, are dependent on their environmental interactions both with other living things and with nonliving factors.
  • LS2.A-M2
    In any ecosystem, organisms and populations with similar requirements for food, water, oxygen, or other resources may compete with each other for limited resources, access to which consequently constrains their growth and reproduction.
  • LS2.A-M3
    Growth of organisms and population increases are limited by access to resources.
  • LS2.A-M4
    Similarly, predatory interactions may reduce the number of organisms or eliminate whole populations of organisms. Mutually beneficial interactions, in contrast, may become so interdependent that each organism requires the other for survival. Although the species involved in these competitive, predatory, and mutually beneficial interactions vary across ecosystems, the patterns of interactions of organisms with their environments, both living and nonliving, are shared.
  • LS2.C-M1
    Ecosystems are dynamic in nature; their characteristics can vary over time. Disruptions to any physical or biological component of an ecosystem can lead to shifts in all its populations.
  • LS2.C-M2
    Biodiversity describes the variety of species found in Earth’s terrestrial and oceanic ecosystems. The completeness or integrity of an ecosystem’s biodiversity is often used as a measure of its health.
  • LS4.B-M1
    Natural selection leads to the predominance of certain traits in a population, and the suppression of others.
  • LS4.C-M1
    Adaptation by natural selection acting over generations is one important process by which species change over time in response to changes in environmental conditions. Traits that support successful survival and reproduction in the new environment become more common; those that do not become less common. Thus, the distribution of traits in a population changes.
The Common Core Standards are educational benchmarks in the United States that outline clear expectations for what students should know and be able to do in English language arts and mathematics from kindergarten through 12th grade, aiming to ensure consistency and coherence in education nationwide.
  • Cite specific textual evidence to support analysis of science and technical texts.
  • By the end of grade 8, read and comprehend science/technical texts in the grades 6-8 text complexity band independently and proficiently.
  • Determine the central ideas or conclusions of a text; provide an accurate summary of the text distinct from prior knowledge or opinions.
  • Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks.
  • Determine the meaning of symbols, key terms, and other domain-specific words and phrases as they are used in a specific scientific or technical context relevant to grades 6-8 texts and topics.
  • Analyze the structure an author uses to organize a text, including how the major sections contribute to the whole and to an understanding of the topic.
  • Analyze the author's purpose in providing an explanation, describing a procedure, or discussing an experiment in a text.
  • Integrate quantitative or technical information expressed in words in a text with a version of that information expressed visually (e.g., in a flowchart, diagram, model, graph, or table).
  • Distinguish among facts, reasoned judgment based on research findings, and speculation in a text.
  • Compare and contrast the information gained from experiments, simulations, video, or multimedia sources with that gained from reading a text on the same topic.
Social Studies Standards are educational guidelines outlining the essential knowledge, skills, and concepts students should learn in subjects such as history, geography, civics, and economics, aiming to provide a comprehensive understanding of societal structures, historical events, and global perspectives.
  • People, Places, and Environments
  • Science, Technology, and Society
  • Time, Continuity, and Change

What Is a Natural Inquirer Journal?

Three Natural Inquirer journal covers with NI bee

 

A Natural Inquirer journal is a collection of 4-8 articles on a related science topic. Journals are written for a middle school audience, but they can also be adapted for both high school students and advanced upper elementary students. Some journals are particularly suited to high school students; you can find our grade level recommendations in the tags on the product page or by filtering journals by grade level.

Journals include:

  • Four to eight articles based on published, peer-reviewed research papers; the articles keep the research paper format (see more below) but are written in language students can understand.
  • A FACTivity for each article, which is an activity to complete after reading the article. The FACTivity helps reinforce major science concepts from the article. These activities are designed to be easy to implement, with few material requirements and options for adapting them for your audience or available resources. Some articles in a journal may have two FACTivities.
  • A short “Welcome to the journal” article about key background information and science concepts that unify the articles included in the journal
  • A glossary of new terms for each article and the introductory materials.
  • A list of related Natural Inquirer publications for each article as well as outside references.
  • Standards correlations, including Next Generation Science Standards, addressed in the articles and the FACTivities.

Journals may also include additional essays (called spotlights), other activities (like crossword puzzles or vocabulary challenges), and more.

 

A screenshot of the article resource tile for "A Flame Changer" showing the three different format option buttons.

Reading Modes

Journals are available in three different formats:

  • Hard copies can be ordered from the website and shipped, all free of charge.
  • PDF versions of the printed journal can be downloaded free on the website. The PDF version directly replicates the content and layout of the printed version. You can also download individual articles as pdfs.
  • The “Read Distraction Free” option allows the individual articles to open in their own window, without the rest of the website being visible. These articles can be found under the “Articles” tab. This version allows readers to scroll to particular sections of the article using the sidebar menu on the left side of the screen. This version also has interactive Reflection Sections and Number Crunches. Students can enter their answers, submit them, and then receive the correct answers to double-check their work. Submitted answers are not saved on the website and will disappear once the window is closed.

What's in a Natural Inquirer Article?

Here, we'll go into more detail about the parts of a Natural Inquirer article and give you some ideas about how they can be used.
  1. Meet the Scientists

    This section introduces the scientists (and others) who worked on the study. In their own words, they each share a memorable science experience, a favorite research project, or something they learned during the course of their education or research.

    Use this section to:

    • Introduce kids to the variety of people who work in science
    • Introduce kids to the variety of scientific fields and give brief descriptions of science-related jobs
    • Explore ways that people interact with science every day

    Next Generation Science Standards (NGSS) applications:

    • Science and Engineering Practices
    • Crosscutting Concepts: Influence of Science, Engineering, and Technology on Society and the Natural World

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    Many of the scientists and engineers featured in this section are also featured on our collector cards. Learn more about their work, how they got interested in their fields, and interesting projects they worked on. Cards can be printed as posters, too.

    A sample Meet the Scientists page, showing four different scientists
  2. Thinking About Science

    This section briefly describes a concept about science or scientific research. This overview can touch on topics like

    • study type (longitudinal study, quantitative vs. qualitative data),
    • behaviors of scientists (conducting literature reviews, collaborating with other specialists, replicating earlier studies),
    • the practice of science (the scientific method, engineering design, data collection, randomization, controls and variables),
    • or other aspects of science (bias, correlation vs. causation).

    Use this section to:

    • Reinforce steps in the scientific method and the process of science
    • Encourage students to think about the practice of science and what it can and cannot tell us
    • Consider the many types of scientific study and what information each type can provide

    Next Generation Science Standards applications:

    • Science and Engineering Practices
    • Life Science Disciplinary Core Ideas (depending on topic)
    • Most Crosscutting Concepts (depending on topic)

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    You can use key words to search for other or related scientific topics on our website (e.g. “longitudinal study,” “bias,” or “sampling”).

    A sample Thinking About Science page from a recent monograph
  3. Thinking About the Environment

    This section provides a brief overview of a topic or concept in environmental/life science. The topic or concept is directly related to the research study that follows. Examples of topics include the carbon cycle, the water cycle, habitat fragmentation, phenology, biodiversity, and ecosystem services.

    Use this section to:

    • Provide important background information to help students understand the research study
    • Serve as a quick reference during reading or class instruction
    • Connect the research article with other activities or media on the same topic

    Next Generation Science Standards applications:

    • Life Science and some Earth Science Disciplinary Core Ideas (depending on topic)
    • Most Crosscutting Concepts (depending on topic)

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    You can use key words to search for more resources on life or earth science topics on our website (e.g. “habitat,” “carbon,” or “genetics”).

    A sample "Thinking About the Environment" section from a recent monograph
  4. Introduction

    This section begins the scientific article format. Much like the published, peer-reviewed study this article is based on, the introduction provides background information for the study – what is currently known and what remains unknown. The introduction culminates in the question(s) the study hopes to answer.

    The introduction is also the first section with a Reflection Section. This section includes two or three questions to help kids reflect on what they’ve just learned in the Introduction. If they are using the online distraction-free reading mode, they can answer these questions directly on the website.

    Use this section to:

    • Review important background information that kids need to understand the study
    • Connect the study to the concepts addressed in the Thinking About Science and Thinking About the Environment sections
    • Understand research questions and hypotheses, including generating their own hypotheses given what they already know

    Next Generation Science Standards applications:

    • Life Science and some Earth Science Disciplinary Core Ideas (depending on topic)
    • Most Crosscutting Concepts (depending on topic)

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    Use one of the guided reading lesson plans to help kids follow the format of a scientific paper.

    A sample introduction page from "Hidden in Plain Sight"
  5. Methods

    This section is the nuts and bolts of the study design – the who, what, when, where, why, and how of the research. Contained within the Methods section are usually maps of the study location or the set-up of study plots, as well as details about what data was collected and how.

    The Methods section also ends with a Reflection Section – two or three questions to help students think through what they just read. These questions are interactive on the distraction-free reading mode.

    Use this section to:

    • Show students how experiments and studies are designed and carried out
    • Explore sampling methods and randomization
    • Introduce various data collection tools (e.g. camera traps, surveys, insect collection tools, weather stations, etc.)
    • Explain bias and how studies are designed to remove bias
    • Help students gain experience with map reading

    Next Generation Science Standards applications:

    • Life Science and some Earth Science Disciplinary Core Ideas (depending on topic)
    • Most Crosscutting Concepts (depending on topic)

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    Many Methods and Findings sections contain Number Crunches, which are simple math exercises designed to help students interact with the data from the study.

    A sample methods section of a monograph article showing a map
  6. Findings

    This section summarizes the data collected during the study. The Findings section usually includes data tables or graphs and highlights the significant data points from the study. This section often mentions statistical analysis or the use of computer programs to model or analyze the data, though these methods are only discussed generally.

    The Findings section also ends with a Reflection Section – two or three questions to help students think through what they just read. These questions are interactive on the distraction-free reading mode.

    Use this section to:

    • Have students practice reading and interpreting graphs and tables
    • Compare results between variables and controls
    • Explain the concept of statistical significance
    • Discuss how no data or negative results still provide valuable information

    Next Generation Science Standards applications:

    • Life Science and some Earth Science Disciplinary Core Ideas (depending on topic)
    • Most Crosscutting Concepts (depending on topic)

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    Search the website for “map” or “graph” to find activities where students can practice making and reading maps and graphs.

    The beginning of a Findings section featuring a large data table
  7. Discussion

    This section concludes each article. In it, we summarize the main findings of the scientists’ study. Additionally, we present the scientists’ ideas about the limitations of their study, the big-picture impacts of their research, and the scientists’ plans for future study or action.

    The Discussion section ends with a Reflection Section – two or three questions to help students think through what they just read, especially general take-aways from the study. These questions are interactive on the distraction-free reading mode.

    Use this section to:

    • Discuss what conclusions can and cannot be drawn from the available data
    • Explain the difference between correlation and causation
    • Explore study limitations and opportunities for further study
    • Brainstorm ways the study findings could be applied to real-world situations

    Next Generation Science Standards applications:

    • Life Science and some Earth Science Disciplinary Core Ideas (depending on topic)
    • Most Crosscutting Concepts (depending on topic)

    Note that specific standards for this particular journal are linked on this educator guide tab.

    Other resources:

    Use the “Designing Your Own Study” resource page for videos of scientists discussing their own research studies. The page also includes educator resources to help students plan their own scientific studies.

    The beginning of the conclusion of "Hidden in Plain Sight"

Additional Resources on the Website

A screenshot of the product tabs for an NI monographOn the website, we pair each journal with a variety of other resources, as well. Use the tabs on the product page to browse through the following:

  • Related activities, including the FACTivity for each article
  • An “About” essay that gives some larger context for the research the scientists conducted or more information about the science topic from the journal
  • A glossary of all boldfaced terms from the journal
  • A “Scientists and Collaborators” page that lists the people involved in the studies in the journal; click on a researcher to reach their bio page and see what other articles they might be featured in
  • A “Related Content” page that lists both Natural Inquirer resources about similar topics and also outside reference materials

Article Selection and Review

Natural Inquirer partners with the USDA Forest Service, so we source research studies by Forest Service scientists that have been peer-reviewed and published in reputable journals. Some of our articles have also been created in collaboration with scientists from other Federal agencies, such as U.S. Geological Survey and the United Nations Food and Agriculture Organization, universities, and other non-profits.

All journal articles are reviewed by scientists who conducted the original research study to verify scientific accuracy. Journals are also reviewed by student editorial review boards of middle or high school students before publication. Additionally, all journals are reviewed by the Forest Service and the U.S. Department of Agriculture before publication.

A screenshot of the citation for "Lights, Camera, Tracks"Every journal article includes a citation of its source study. Many educators pair the original research paper with our article to help more advanced students learn how to read formal research papers. The journal article then serves as adapted primary literature, bridging the two articles.

Lessons

  • PDF preview of Citizen Science Lesson Plan.
    In this lesson, students will use graphic organizers to help guide their reading of an article. Materials: Graphic organizers (included) Writing utensil This lesson plan can be used with any...

    Lesson Plan – Reading Graphic Organizers

    • Lesson Plan
    • Middle School
    • 2-3 Classroom Periods
    • Active Forest Management
    • Agriculture
    • Carbon
    • Citizen Science
    • Engineering and Forest Products
    • Fire
    • Insects
    • Pollinators
    • Pollution
    • Recreation
    • Social Science
    • Water
    • Wilderness
    • Wildlife
    • Graphic Organizer
    • Guided reading
    • Reading for Information
    • Reflection
    In this lesson, students will use graphic organizers to help guide their reading of an article. Materials: Graphic organizers (included) Writing utensil This lesson plan can be used with any...
    • Explore Lesson Plan
    • Download Lesson Plan (PDF)
    • Explore Lesson Plan
    • Download Lesson Plan (PDF)

    Part Of

    Citizen Science - Vol. 19 No. 1

  • PDF preview of Freshwater lesson plan.
    In this lesson, students will create a storyboard to graphically represent the main points from the research article they read. This lesson plan can be used with any Natural Inquirer...

    Lesson Plan – Storyboard

    • Lesson Plan
    • High School
    • Middle School
    • 2-3 Classroom Periods
    • Active Forest Management
    • Agriculture
    • Carbon
    • Citizen Science
    • Engineering and Forest Products
    • Fire
    • Insects
    • Pollinators
    • Pollution
    • Recreation
    • Social Science
    • Water
    • Wilderness
    • Wildlife
    • Creative
    • Guided reading
    • Story Telling
    In this lesson, students will create a storyboard to graphically represent the main points from the research article they read. This lesson plan can be used with any Natural Inquirer...
    • Explore Lesson Plan
    • Download Lesson Plan (PDF)
    • Explore Lesson Plan
    • Download Lesson Plan (PDF)

    Part Of

    Freshwater - Vol. 18 No. 1

  • PDF Preview of Twitter Team Lesson Plan
    In this lesson, students will increase their reading comprehension, critical thinking skills, and summarization and explanation skills. Students will role-play as members of the Natural Inquirer Twitter Team (now X...

    Lesson Plan – Twitter Team

    • Lesson Plan
    • High School
    • Middle School
    • 2-3 Classroom Periods
    • Active Forest Management
    • Agriculture
    • Carbon
    • Citizen Science
    • Engineering and Forest Products
    • Fire
    • Insects
    • Pollinators
    • Pollution
    • Recreation
    • Social Science
    • Water
    • Wilderness
    • Wildlife
    • Reading Comprehension
    • Reading for Information
    • Science Writing
    • Summarize
    In this lesson, students will increase their reading comprehension, critical thinking skills, and summarization and explanation skills. Students will role-play as members of the Natural Inquirer Twitter Team (now X...
    • Explore Lesson Plan
    • Download Lesson Plan (PDF)
    • Explore Lesson Plan
    • Download Lesson Plan (PDF)

    Part Of

    Hawaii Pacific Islands - Vol. 1 No. 16

Education Files

Project Learning Tree

If you are a trained Project Learning Tree educator, you may use “Have Seeds Will Travel” as an additional resource.

Glossary

View All Glossary
  • database

    (dā tə bās): A usually large collection of data organized especially for rapid search and retrieval (as by a computer).

  • deter

    (di tər): To turn aside, discourage, or prevent from acting.

  • displace

    (di splās): To force (people or animals) to leave the area where they live.

  • forage

    (fȯr ij): (noun) Food for browsing or grazing animals.

    (verb) To wander in search of forage or food.

  • habitat

    (ha bә tat): The place or environment where a plant or animal naturally or normally lives and grows.

  • implant

    (im plant): To insert in living tissue (as for growth or absorption).

  • migratory

    (mī grǝ tȯr ē): Of, relating to, or characterized by moving, usually periodically, from one region or climate to another for feeding or breeding.

  • molt

    (mōlt): To shed hair, feathers, shell, horns, or an outer layer periodically.

  • native

    (nā tiv): Living or growing naturally in a particular region.

  • plumage

    (plü mij): The feathers of a bird.

  • snorkel

    (snȯr kəl): To use a tube when swimming so that the swimmer can breathe with their head under water.

  • spawn

    (spän): To produce young especially in large numbers.

  • tributary

    (tri byə ter ē): A stream that flows into a larger stream or river or into a lake.

  • yearling

    (yir liŋ): An animal that is one year old or in the second year after birth.

  • Dr. Ortega standing on top of a snowy mountain range with a dog.

    Yvette Ortega

    Ecologist

    “I grew up in southern California in a big city. My first biology job took me all the way to the wilds of Alaska. That convinced me that I was...
    View Profile
  • Aubree Benson holds a trout as she stands in a river with a dam in the background.

    Aubree Benson

    Fisheries biologist

    In the photo, I am holding a large (7 pound) bull trout. We captured this trout below the Emily-A-Dam, which is in the background. The dam was on the Clearwater...
    View Profile
  • Erick Greene paddles a canoe in a lake.

    Erick Greene

    Wildlife Biologist

    My favorite science experiences have always been in the field observing fascinating things in nature. These experiences are what give me ideas about interesting things that might be going on,...
    View Profile

Citizen Science Connections

Birds are an important part of every ecosystem. The presence or quantity
of birds in a location can tell scientists a lot about the health of birds and the environment. Using eBird, scientists are asking citizen scientists to collect data about where and when they see birds. The study of birds is called ornithology.

eBird lets citizen scientists:
• Record the birds they see;
• Keep track of their bird lists;
• Explore maps;
• Share their sightings; and
• Contribute to science.

eBird is a project created by the Cornell Lab of Ornithology. The eBird database collects millions of citizen scientist bird sightings each month for use by scientists, land managers, and other citizen scientists. Join the effort today!

Jump To

  • Related from Natural Inquirer
  • Additional Resources

Related Resources from the Natural Inquirer

  • Drawing of mice eating spotted knapweed.
    In the Western United States, spotted knapweed is one of the most widely found nonnative plants. Spotted knapweed was brought to the United States from Eastern Europe in the early 1900s. To control the...

    Goll-ly! Don’t Take a Knapweed! The Impact of Nonnative Plants and Animals on Deer Mice

    • Article
    • Middle School
    • 1 Classroom Period
    • Active Forest Management
    • Insects
    • Wildlife
    • Deer Mice
    • Ecosystem
    • Gall Flies
    • Grasslands
    • Invasive Plants
    • Nonnative Species
    • Spotted Knapweed
    In the Western United States, spotted knapweed is one of the most widely found nonnative plants. Spotted knapweed was brought to the United States from Eastern Europe in the early 1900s. To control the...
    • Explore Article
    • Download Article (PDF)
    • Explore Article
    • Download Article (PDF)

    Part Of

    Invasive Species - Vol. 8 No. 1


Additional Resources

  • eBird

    eBird is among the world’s largest biodiversity-related science projects, with more than 100 million bird sightings contributed annually by eBirders around the world and an average participation growth rate of approximately 20% year over year. A collaborative enterprise with hundreds of partner organizations, thousands of regional experts, and hundreds of thousands of users, eBird is managed by the Cornell Lab of Ornithology.

    Visit Website
  • USDA Forest Service: How to get started birding

    Learn about the joys of birdwatching and how to get started. Beautiful photos, too!

    Read Article
Back to Top
  • Natural Inquirer - Homepage
  • Find Outdoors
  • USDA
  • USDA Forest Service logo.

The Natural Inquirer program produces a variety of science education materials for PreK through grade 12. Natural Inquirer products are produced by the USDA Forest Service, FIND Outdoors, and other cooperators and partners.

Please enable JavaScript in your browser to complete this form.
* denotes mandatory fields
Loading
  • Facebook
  • Pinterest
  • X, formerly Twitter
  • YouTube
  • About Natural Inquirer
  • Team
  • Partners
  • Press & Past Events
  • Contact Us
  • Accessibility Policy
  • Privacy Policy
  • Shipping Policy
© 2026 - Natural Inquirer | Website Credit