from web site
The females form big maternity colonies, frequently in structures such as attics or barns. Young are born in June, and can fly by August. They can measure up to thirty years apparently, though typical life-span in the wild might be about 7 years. They hibernate in the winter. The (Eptesicus fuscus) is also common in the northern areas.
They mate in October, before winter season hibernation, and after a delayed fertilization and a 60 day gestation, offer birth to one or two child bats in early June. The Tadarida brasiliensis is typical in the south. It has a wingspan of about 8 inches, a weight of half an ounce, and can measure up to 16 years.


They mate in the fall, however hold-up fertilization, and one puppy is born in early June, and can fly about eight weeks later on. All of these bats frequently roost in man-made buildings, and like the attics of homes. None of these animals are in fact blind, but they do use echolocation in order to assist in navigation on the wing.
Read About Colonizing Bats types information. Bats are nocturnal. They oversleep roosts during the daytime, and emerge at dusk. If it's a colony of bats residing in a building, they crawl to the edge, and fly out. Initially they head for water and get a drink, skimming the surface on the wing.

After a while they get complete and head back to the roost in order to rest. They then fly back out to feed some more. They may make a number of journeys per night. Bats use echolocation in order to help in navigation and feeding on the wing. They produce high-pitched chirps and check out the sonar-like returns of the sound waves as they recover off of items.
These nests are composed mainly of women. The males roost alone in singular locations, such as trees. The females form big clusters, really often in man-made architecture such as church towers, attics, bridges, and so on. They endure and even choose very high temperatures. A lot of the southern bats move to various areas as environments alter.