2 min listen
How Many Eggs to Lay?
FromBirdNote Daily
ratings:
Length:
2 minutes
Released:
Jun 25, 2023
Format:
Podcast episode
Description
When nesting, most birds lay a predictable number of eggs. Bald Eagles: 2. Bluebirds: 4 to 6. Mallards: 10 to 12. But how do they determine when they have laid the right number? To find out, scientists experimented by going to nests and repeatedly removing eggs soon after they were laid. Some birds replaced them straight away. For example, a House Sparrow laid 50 eggs in a row, while a flicker laid 71 eggs in 73 days. But for other birds, the scientists’ removal of the eggs had no effect at all.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.
Released:
Jun 25, 2023
Format:
Podcast episode
Titles in the series (100)
Putting the Hum in Hummingbird: Uncovering physics of that iconic, musical hum. by BirdNote Daily