Lesser mouse-tailed bat

Lesser mouse-tailed bats are considered to be "acoustically primitive" because they use signals with four or more harmonics and with little frequency variation (Whitaker Jr. and Yom-Tov, 2002). They emit long constant frequency (CF) calls at 30 to 34 kHz with a peak energy at 32 kHz (Davis, 2007). They emit these CF sounds when flying in open spaces for approximately 48 ms. When they fly in groups, lesser mouse-tailed bats emit CFs in three bands. However, when they fly solo the bat emits CFs in only one band. Frequency modulated (FM) sounds are produced only as they leave their roost or shortly before landing (Whitaker Jr. and Yom-Tov, 2002). Communication Channels: acoustic Perception Channels: tactile ; echolocation ; chemical

via IUCN