Gary M. Fellers and Chris Corben; United States Geological Survey
Media Rights Management
Audio file courtesy United States Geological Survey. Converted to mp3 delivery format and made available by the Western Soundscape Archive at Westernsoundscape.org under the Creative Commons Attribution-Noncommercial 3.0 Unported License; http://creativecommons.org/licenses/by-nc/3.0/
Western Soundscape Archive; University of Utah
Compressed from .wav format into .mp3 delivery format
J. Willard Marriott Library, University of Utah, Salt Lake City, Utah 84112; Ecological and animal data provided by NatureServe. 2006. NatureServe Explorer: An online encyclopedia of life [web application]. NatureServe, Arlington, Virginia. Available http://www.natureserve.org/explorer
Feeding echolocation of a Brazilian Free-tailed Bat
Feeding buzz. When a bat detects a flying insect that it might want to eat, the search phase calls change to a feeding buzz. The calls become somewhat higher pitch, but most notably, they are produced so rapidly that the individual calls merge into what sounds like a buzz. Source: http://www.werc.usgs.gov/bats/searchphasecall.html. This recording was made by a high frequency bat detector. The pitch (frequency) for this recording has been lowered by a factor of 16 so the calls fall within the range of human hearing.