Maternity: In early summer, as the weather gets warmer, pregnant females needs a warm, safe location to have their pups. The length of the pregnancy depends on the species, environmental conditions, and food availability. Myotis lucifugus (MYLU) give birth to one pup per year and nurture them carefully.
Hibernation: During the winter, bats behaviorally thermoregulate by going into a state of torpor, grouping together or separating position, shivering, and selecting positions that are optimal for roosting. Roosting locations during hibernation should be cool and remain at an ambient temperature above freezing. If the ambient temperature fluctuates, the bats will move around to find a more suitable roosting location.