While not all birds can fly, there are other things that they do have in common. All birds have feathers, lightweight skeletons, beaks, and all lay eggs.
Wings
no they do not all stay in the same place because some birds live in water
no,not necessary that all birds do the same...
Yes, baby birds have the same body as the parent when they are born all except for feathers. Within 12 to 14 days the baby birds develop all of their feathers.
They come the same way all other birds come from. An egg.
Some but not all. Some bats and birds both eat bugs.
Birds can adapt to live in all environments.
Same as all birds- skin.
No, they are not the same, but all reptiles are vertebrates. Not all vertebrates are reptiles, they could be fish, mammals or birds.
Yes. All chickens have the same skeletal system as regular birds.
All sizes and shape of birds are not the same,sometimes there are small and sometimes there are big....
Emus are not mammals, and are therefore not the same as other mammals at all. Emus are birds.
Reptiles and birds share enough common characteristics to be classified in the same clade called Sauropsida, which includes all modern reptiles and birds.