The Eastern Pipistrelle Pipistellus subflavous is a very tiny bat and one of the most commonly and distributed bats found in the forests in the Eastern United States. They are typically one of the first species to come out each night and fly much like a moth in a slow, fluttering flight pattern with an uneven direction.
They are known to fly each summer night and eating insects and building body fat for their winter hibernation. This species is one of the least tolerant of cold species and one of the first species to leave for their mine and cave hibernation locations often far , far away. Generations and generations of Eastern Pipistrelle return to the same cave each year.
The Eastern Pipistrelle is nocturnal and only active on warm dry nights coming out at sunset and returning before sunrise to their colonies roosting sites. Their roosting sites have large piles of dark top black scat, bat guano or bat feces.
The Eastern Pipistrelle is one of the few bat species that routinely give birth to twin bat pups in June that are about 1/5 of their own mother bats weight . They live anywhere to 10-15 years, weigh 1/10th to 1/2 ounce in weight. They are reddish to light brown in color. The hairs on their back are tri colored with a dark base, pale middle and a nearly black tip. They also have very tiny eyes.
The Eastern Pipistrelle is an insectivore and is a nightly predator of many insects including mosquitoes, moths, crane flies and midge flies.
- Update 01 Feb 2012 : White Nose Syndrome | Bat Conservation INTL (batremovalpro.com)