Question

Bats have wings but they are not birds. Why?​

Answer 1

Answer:

According to scientific principles of classification, though, we now know there's no such thing as a bird without feathers. Instead, bats are mammals. In fact, bats are the only mammals that can truly fly. ... Bats also give birth to live young and produce milk to nurse their babies.

Answer 2

Answer:

they don't give eggs, they go through internal reproduction