Temperature and Humidity-Induced Shifts in the Flight Activity of Little Brown Bats

Author Institution: Ohio Cooperative Wildlife Research Unit, The Ohio State UniversityThe importance of ambient environmental conditions to flight activity in little brown bats, Myotis lucifugus, has received attention, but the influence of relative humidity has been largely ignored. Through the use of mist net captures, activity of male and female M. lucifugus were examined in relation to temperature and relative humidity. Activity of males was significantly greater under conditions of both higher temperature and relative humidity, suggesting that these bats alter their flight activity in response to changes in air saturation