birds are a whole class in themselves.
birds reptiles mammals amphibians fish
Penguins are birds; they lay eggs.
Many birds fly and a number mate for life. But no bird is a mammal.
Mammal.
If a mammal is pregnant, a mammal will give a live birth. Now birds and other animals of that kind, will lay eggs. The only mammal to lay eggs is a platypus.
A bird. Birds feed their young food they find. I believe that any animal that is not a mammal does not have nipples.
No. Nighthawks are birds and birds are not mammals.
No. Nighthawks are birds and birds are not mammals.
Birds
No, they are birds
Its a mammal
There are many subtle differences, but generally, birds lay their young in eggs and mammals give live birth.
The Emperor penguin is not a mammal, it is like all other birds and penguins.