That's easy. Bats are the only bats that can fly. So if you are a mammnal but you're not a bat, you can't fly.
A penguin can fly. But cannot fly in the air. It can only fly in the water.
Penguins cannot fly, nor did the dodo, which is why it is extinct. Also the emu and the ostrich. Neither of those two birds can fly.
hens and turkey, peacocks cannot fly
Emus, ostriches, and kiwis are three birds that cannot fly.
Birds cannot fly at all without their feathers.
they cannot fly
To say that birds use wings and feathers to fly, so all birds can fly, would be false. Not all birds can fly. An ostrich is an example of a bird that cannot fly.
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There are several birds that cannot fly, all the species of Penguins, Emu, Ostrich, Kiwi, and the Cassowary are a few.
They are flightless birds- they do not (and cannot) fly.
a penguin cannot fly and others can
The scientific term for birds that cannot fly is "flightless birds." Examples include ostriches, penguins, and kiwis.
Cats cannot fly. birds and other animals can. but cats however, cannot.