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Predation of Lesser Nacked-backed bats by a pair of American kestrels on the Island of Marie-Galante, French West Indies.

Arnaud Lenoble 1 Corentin Bochaton 2 Teddy Bos 1 Emmanuel Discamps 3 Alain Queffelec 4
3 PPP
PACEA - De la Préhistoire à l'Actuel : Culture, Environnement et Anthropologie, AHKR / UiB - Department of Archaeology, History, Cultural Studies and Religion [Bergen]
4 PPP
PACEA - De la Préhistoire à l'Actuel : Culture, Environnement et Anthropologie
Abstract : Here we report the predation on a colony of Lesser naked-backed bat (Pteronotus davyi) by a pair of American Kestrel (Falco sparverius) based on observations over a 16 day period. Kestrels preyed on bats in the evening as they were leaving their roost with two factors controlling hunting efficiency, namely: (1) meteorological conditions, and (2) the time of flock formation. The frequency of occurrence is 93.8% and the success rate is 16.4%. We estimate that bats provide 6.25% of the kestrel's daily food requirement. The case reported here is the first to describe the regular predation of a bat colony by the American Kestrel - a hunting behaviour that has never before been reported for this species This behaviour is interpreted as an example of the trophic adaptation of the American Kestrel to island environments typical of the Lesser Antilles.
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Submitted on : Wednesday, June 11, 2014 - 9:02:20 PM
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Arnaud Lenoble, Corentin Bochaton, Teddy Bos, Emmanuel Discamps, Alain Queffelec. Predation of Lesser Nacked-backed bats by a pair of American kestrels on the Island of Marie-Galante, French West Indies.. The Journal of Raptor Research, The Raptor Research Foundation, 2014, 48 (1), pp.78-81. ⟨10.3356/JRR-13-28.1⟩. ⟨halshs-00984122⟩

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