A group of bats or bats living in large numbers are known as a colony. A colony of bats can have as many as 1, 000 individuals, and at night they all fly out at once in search of food. Bats are social animals and are rarely found flying solo.
A colony is what a group of bats are referred to. A baby bat is known as a pup. The male and female adult bat doesn't have a special name.