Most birds will make a nest in which they lay their eggs.
They will then use their own body heat and 'sit' on the eggs to incubate them.
Some birds don't make a nest, a penguin for example will hold a single egg on top of it's feet, then cover the egg with it's belly to keep it warm.
They use their nest for insulation and their body heat to keep them warm - by sitting on the eggs while in the nest.
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).
Birds Sit on their eggs to keep them warm, and to hide and protect them from predetors.
Well to begin with, the turtle digs a hole and lays her eggs inside it. Unlike chickens and birds, turtles dont sit on their eggs to keep them warm, the sand does it for them. BTW Incubate: Sit on eggs in order to keep them warm and bring them to hatching OR Keep eggs at a suitable temperature in order for them to develop.
Most birds lay on their eggs to keep them warm and safe.
Penguins and Birds both have beaks and lay eggs they also keep their eggs warm by there fethers
To keep both sides warm!
When birds lay eggs they usually sit on them and keep them warm. Just like when a human is pregnant, our baby stays warm inside our body. If we freeze to death outside, our baby would die. If the eggs aren't kept at the temperature of the parents they wont be warm enough and they baby birds will not grow inside.
because they are like any other birds, they need 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 birds do hatch from eggs
Keep the eggs somewhere warm, supervise them and make sure their covered in the warm place. <(") <- bird face
All birds are warm blooded.