they breath from there lungs
...And they inhale/exhale through their beak or nose (which is the two little holes above their beak).
trough nose
A Puffin
Yes.
the baby bird is called nestling
well if that baby bird is your pet and it can nearly fly,....... no. Trust me i have a baby bird for a pet.
they become migits and when they turn to bird their feather get bigger
No, a baby bird cant, but if it is crushed it can.
Baby reptiles breathe air through their nostrils and their mouths into their lungs, just like adult reptiles.
Yes. When first hatched, a baby platypus can breathe on its own.
The baby bird eats it. It's important fo baby birds to get nutrients, and the yolk contains the things a baby bird needs to grow proplerly.
you learn when you're a baby
At birth, a baby has approximately 300 bones. It depends on the baby.