There are a a couple possible choices. Bats are the only mammals capable of flying like birds. Monotremes, which consist of the echidna and the platypus, are the only mammals that lay eggs.
A kiwi is not like a mammal. It has all the characteristics necessary to classify it as a bird alone.
A penguin is a bird and not mammal. They have all the features of a bird like laying eggs, having feathers and being warm-blooded among others.
There isn't a mammal-bird.
No. Whether it is tropical or not, no bird is a mammal.
There is no such thing. No bird is or ever was a mammal.
No. A budgerigar (budgie) or parakeet is a bird, not a mammal.
A mammal.
mammal
An impala is a mammal, a large antelope.An impala is a four-legged ungulate mammal, much like an antelope.
A dolphin is a mammal because they breath air just like humans
Kiwi (New Zealand Bird) Kangaroo (Australian Mammal) Kukkaburra (Australian Bird) Koala (Australian Mammal)
Bird