Fecal sac

High school (ages 12+)
Animals & Nature

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/fecal-sac

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the biological classification?A membrane-bound mass of avian excreta, primarily in altricial nestlings
2. What is the nutritional significance?Can be a source of supplemental nutrients for parent birds, particularly females
3. What are fecal sacs and why do baby birds make them?They are little poop packages that baby birds wrap in a thin membrane so they can keep their nest clean.
4. How do parents help keep the nest clean with fecal sacs?Parents pick up the sacs and carry them away, so the nest stays fresh and safe.

Altricial: Describes young animals born in a helpless condition, requiring extended parental care.
Passerine: A large order of birds, commonly known as perching birds or songbirds.
Volatile chemical cues: Substances released into the air that can be detected by smell, potentially signaling location.