how do bird’s eggs retain enough heat to survive when their parents are not actively sitting on them?

Question

I’m sure some of it depends on the species of bird, but I still don’t get it.

In: Biology

Answer 1

this is actually part of the plan. the short cool down of the eggs can improve the chance of hatching healthy. i even read something about how different organs in the embryos won’t develop properly without the slight cool period they get from being left alone for a bit. hen gets to go peck around for a bit. and her kids get functioning livers. crazy evolutionary stuff.