Davis and Reite were able to supercool the M.l.lucifugus to -5 degrees Celsius. This mechanism for survival could be important for the bat when exposed for short periods to sub-zero temperatures in the wild. In the summer, when the maternal colonies are found in hot locations, the body temperature gets as high as 64 degrees Celsius. During the winter, when bats hibernate together, disproportionate sex ratios have been observed. M.l.lucifugus are described as slow, straight flyers.
People see bats as carriers of many diseases.
However, bats do not generally carry rabies or other diseases any more frequently than other mammals. One disease often carried by bats is hitoplasmosis, a fungal lung infection carried by bat spoor. When removing a bat, people will often try to hit it with a broom or a tennis racket, however, this only scares the bat. It will fly around erratically which causes people to think the bat is attacking, when it is just trying to escape. When a bat flies around a person's head, people often think the bat is attacking them, which is not true.