I had this thought while watching ducks.
Birds lay eggs and then sit on them to keep them warm until they are ready.
But why? The eggs was already inside them and it’s warm there of course.
Then I thought it may related to mamals with vaginal canal analogy but the eggs does not grow while out.
So the bird could keep it in the lay it’s just when it’s ready.
My last thought is that carrying the eggs is too dangerous for their safety or its hard to move and gather food.
Please explain 🙂
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Birds typically lay clutches of eggs, as in several eggs at once.
Chickens are pretty different because of domestication and breeding for steady egg production.
Wild birds only lay eggs at certain times, and their bodies are not designed to function well with multiple eggs inside them. It would be somewhat equivalent to a person being 9 months pregnant. And momma bird still has to fly around to get food and water.
Plus, laying the eggs in a nest allows for the papa bird to be involved in the incubation process. They can take turns protecting the eggs instead of it all being up to one of them.
At the end of the day, though, it’s just evolution. Birds that do it this way survive, so it just works. For whatever reason. If other ways worked just as well, we’d see them more often. Apparently, they don’t.
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