help it breath like any other being with lungs
Yes. Bird lungs are more efficient than mammal lungs.
smaller
Yes.
lungsPeacock is a bird. All birds breathe by lungs
Bird's have lungs, and no gills, because they are birds, which have lungs, and are not very aquatic. Some birds go underwater, like pelicans and penguins, but they have to surface from time to time. They can hold their breath for a long time, but they still have to breath occasionly.
An Ostrich is a flightless bird, and breaths through internal lungs.
with lungs you breath air and with gills you breath in water
claws
The left side of a bird's heart pumps blood to the cells.
The kiwi is a bird because it satisfies all the criteria of a bird. It is a warm-blooded vertebrate that breathes through lungs. It has feathers and lays eggs.
The right ventricle pumps the blood to the lungs.
Kookaburras are birds: like all birds, they breathe using lungs.