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The Secret Stash of Eggshells
Podcast |
BirdNote Daily
Publisher |
BirdNote
Media Type |
audio
Categories Via RSS |
Education
How To
Natural Sciences
Nature
Science
Publication Date |
Jan 04, 2024
Episode Duration |
00:01:37

Developing eggshells requires a key ingredient — calcium — in larger quantities than the female typically has in her bloodstream. Just how different bird species supply or store calcium for egg-laying isn’t fully known. While some species seek out extra calcium from their environment, many species simply "borrow" calcium directly from their leg bones! The eggs seen here are those of an Anna's Hummingbird.

More info and transcript at BirdNote.org

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She gets calcium from her leg bones.

Developing eggshells requires a key ingredient — calcium — in larger quantities than the female typically has in her bloodstream. Just how different bird species supply or store calcium for egg-laying isn’t fully known. While some species seek out extra calcium from their environment, many species simply "borrow" calcium directly from their leg bones! The eggs seen here are those of an Anna's Hummingbird.

More info and transcript at BirdNote.org

Want more BirdNote? Subscribe to our weekly newsletter. Sign up for BirdNote+ to get ad-free listening and other perks. 

BirdNote is a nonprofit. Your tax-deductible gift makes these shows possible.

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