Brood patch

Ospreys transfer their heat via a temporarily bare area of abdominal skin called the brood patch.


Large birds of prey such as ospreys and eagles have small brood patches which corresponds to a longer incubation time.

Ospreys can sense their embryo’s movements and temperature with receptors in their brood patches. This helps them regulate their attentiveness (time spent incubating) more accurately. Since the embryo itself increasingly generates heat as it develops, periods of attentiveness can decline as incubation progresses.

“When you see me rocking back and forth on my eggs, I am positioning them into my brood patch.”

Brood patch - eagle 3.jpg

The eagle’s brood patch

About Harriett Raptor

Eight-year-old mother of five, fluent in telepathy, a possessor of genetic memory, a genius and scholar. Harriett holds the equivalent of a PhD in philosophy, biology, chemistry, physics, astronomy, and the Homo sapiens’ concept of the humanities. Her understanding of mathematics and logic are beyond Homo sapiens’ current comprehension. Harriett is a thinker, a wise osprey, especially distinguished for her expertise in the Homo sapiens problem.
This entry was posted in Ospreys. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s