When the bird breaths in, the oxygen stays in there air sacs, but when humans breath in, the oxygen doesnt stay in the air sacs, it has a gas exchange in the alvioli and the oxygen goes into the blood stream
Mammals differ from birds as birds lay eggs, and mammals give live birth.
Yes, in some ways birds are very similar to mammals. In others, they differ completely.
Birds and mammals both have internal skeletons, closed circulatory systems, similar digestive systems, and are warm blooded.
Mammals have fur, and birds have feathersMost mammals give birth to living young and birds lay eggs
Of course not ...no birds are mammals !!!!!!!!!!!No, they are birds.
Adaptations that birds and mammals share include the fact that they are both warm blooded, they are both vertebrates, and they both have four chambered hearts. Unlike mammals, birds are covered in feathers and all birds lay eggs. Unlike birds, mammals are covered in hair, produce milk for their young, and nearly all mammals give birth to live young (except a few species that lay eggs).
Born animals are mammals and eggs can be from birds, reptiles, amphibians and two types of mammals, the platypus and the echidna.
The digestive systems of birds and mammals differ primarily in structure and function. Birds possess a unique organ called the gizzard, which grinds food, allowing them to efficiently process seeds and tough materials, as they often lack teeth. In contrast, mammals typically have teeth for mechanical digestion and a more complex stomach structure that varies among species, such as ruminants having a multi-chambered stomach for fermenting plant material. Additionally, birds have a cloaca, a single exit for digestive and reproductive tracts, whereas mammals have separate openings for these functions.
No, they are birds.
No. Birds are not mammals.
No. It is a bird. Birds differ from mammals in several ways, most notably that they do not nurse their young. Birds feed their young with the same food they eat.
No. They are birds. Birds and mammals are separate classes of animal.