Bats have fur but birds do not.
Bats are mammals that give birth to live young, whereas birds give birth by way of the laying of eggs.
Bats have the ability to echolocate, using sound waves to navigate and locate prey in the dark, which birds do not have. Additionally, bats are the only mammals capable of sustained flight, whereas birds have feathers and wings designed for flight.
With birds and bats, the carry the pollen in their hair and feathers.
Bats do, birds do not
Birds and bats
Both bats and birds are warm-blooded vertebrates.
Bats are mammals, birds are not. Birds lay eggs, bats do not.
Bats are not birds. Bats are flying mammals. Some birds have a rudimentary echolocation capacity. These birds are the oilbirds of South America, and the cave swiftlets of Asia.
A bat bears it's young alive, does not have feathers and does not have the high metabolic rate of a bird.
It is not only birds that fly. Bats fly and they are not birds.
They are not THAT closely related; bats are mammals, not birds. Both mammals and birds are vertebrate animals.
Some but not all. Some bats and birds both eat bugs.
The basic difference between bats and owls is that bats are mammals and owls are birds.