The importance of group vocal behaviour in roost finding

摘要: Individuals benefit from socially acquired information to avoid predation risks and enhance foraging efficiency. Spix's disc-winged bats, Thyroptera tricolor, form very stable social groups despite their need find a new roosting site daily. tricolor produce two contact calls: inquiry calls, emitted during flight, response produced by bats after finding suitable roost (in furled leaf). Bats within exhibit consistent individual differences in vocal behaviour thus, are composed mix of less more individuals. To date, it is not known whether calling decrease the time required for correlated with an individual's ability quickly locate roosts, thus constituting behavioural syndrome. Here, we compared spent roosts when bat called inside roost, either frequently or infrequently. Moreover, estimated how well rates predicted bat's later roost. Results experiments field observations show that enter faster more. This suggests frequent decreases search time, which may allow groupmates save energy exposure predators. activity also discovery (furled leaves) natural habitat, emphasizes relevance individuals group. Our work represents step understanding importance communication group formation stability gregarious animals.