If you hold an un cracked egg in your palm - no matter how hard you squeeze it wont crack! Because of the pressure or something... the same happens for the birds.
The right pressure and position and weight VERY PRECICE!
There are many birds that do not have to sit on their eggs constantly. Robins only sit on the eggs occasionally.
Birds Sit on their eggs to keep them warm, and to hide and protect them from predetors.
they sit on their eggs about the same amount other birds do and they do not bury their heads in the ground.
Yes, like all birds, the eggs must be incubated to hatch.
No- and it would not help if they did- snakes are cold blooded.
so that their baby's will develop properly , if your told its to keep them warm its wrong , ( birds sit on the eggs to keep them warm).
It's a maternal instinct - in the wild hens / birds sit on their eggs to keep them warm grow into chicks and hatch. Most eggs now are unfertilised but the hen retains the maternal instinct to sit on them anyway.
Yes, a female Lorikeet can and sometimes will lay eggs without a mate. In fact, most female birds can do this. Of course the eggs will not be fertile, though the hen (female bird) may sit on them as if they were. It's not healthy for our pet birds to lay eggs. Many problems may arise, including nutritional depletion or egg binding (the egg gets stuck). There is more information about how to prevent egg laying here www.4AnimalCare.org/birds
Turkeys do sit on their eggs to keep them warm, as do most birds.
because they are like any other birds, they need to keep them warm!
because the dome shape balances the force or mass of pressure so it is equal. how did you expect birds to be able to sit on eggs.
All birds have to incubate their eggs, keeping them at a certain temp and turning them so the chicks won't stick to the inside of the eggs. Some birds cover their eggs to keep them warm when they are away, but most just use their own body heat