What kills grey bats? Humans due to pollution, cave commercialization, pesticide poisoning, natural calamities such as flooding and cave-ins, loss of caves due to inundation by man-made impound and possibly a reduction of insect prey over streams that have been degraded by excessive pollution and siltation.
Hibernation For hibernation, the roost site must have an average temperature of 42 to 52 degrees F. Most of the caves used by grey bats for hibernation have deep vertical passages with large rooms that function as cold air traps.
Bat stuff The grey bat typically weighs 8-13 g. Its diet consists predominantly of insects. All species of the genus Myotis , including the grey bat, rest by day and forage at night. They often hunt and feed over water. The feeding flight usually alternate with periods of rest, during which the bats hang to digest their catch. Colonies of the grey bat travel up to 14 km from roosts to foraging areas. The grey bat has a wingspan of about 11-12 inches and is uniformly dark grey The grey bat is aptly named due to its pigmentation.
More bat pictures For the next two slides there will more pictures.
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