Design of bat echolocation calls: implications for foraging ecology and communication

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Abstract
A number of studies has proposed that echolocation calls of different design can be associated with specific hunting strategies of insectivorous bats. Unfortunately, a lack of data about intraspecific variation means that the hypothesis is not challenged by the data base. Changes in echolocation call design may reflect functions other than resolution of detail about targets. There is observational and experimental evidence indicating that echolocation calls may serve a commmunication function while permitting an echolocator to collect information about its surroundings. Only further research will help us to appreciate the influence of different factors on the design of echolocation calls.

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