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Q&A

Comments on Where do bald eagles go at night if not in their own nests?

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Where do bald eagles go at night if not in their own nests?

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I've recently learned of a local eagle cam and have been enjoying watching a pair of bald eagles and their three chicks. While I don't have access to many days of video to check (the site buffers 12 hours), I have noticed a pattern the past few nights that I'm curious about.

Throughout the night (or spot-checks, anyway; it's not like I'm watching all of it in real time), I've noticed that one of the adults is almost always present, but not both. Usually it seems to be "standing guard" just outside the nest, like this:

blurry screen-grab: three chicks sleeping in nest, adult on branch at edge facing away from the camera

The preferred position seems to be facing away from the camera, so even if the night-time video weren't low-res I can't tell if the bird seems alert or is sleeping.

Occasionally the adult is instead in the nest with the chicks:

adult sitting up in middle of nest, awake as far as I can tell

But it's always just one adult when I've checked, though if the other were nearby and just out of camera range, I wouldn't be able to tell. During the daytime the adults don't seem to be reluctant to share the nest.

If it's not nearby, where does the other adult go? Bald eagles are, I understand, diurnal, so I wouldn't expect it to be that active at night. But when it's not active, wouldn't it "go home" to its nest?

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2 comment threads

Same question applies to most birds. (1 comment)
The other parent might be the one actually guarding (1 comment)
Same question applies to most birds.
Olin Lathrop‭ wrote over 2 years ago

Most bird nests are too small for more than one adult sitting on eggs. Once the chicks hatch, you don't see an adult in the nest at all. Eagles are unusual in that the nest is big enough for everyone. Also, where do birds sleep when they aren't nesting? Most bird nests are left empty all the time when they are no longer used to rear young.