FLOCK FEEDING AND FOOD INTAKE IN LITTLE EGRETS: THE EFFECTS OF PREY DISTRIBUTION AND BEHAVIOUR
作者： M. Kersten , R. H. Britton , P. J. Dugan , H. Hafner
DOI: 10.2307/5457
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摘要: SUMMARY (1) Little egrets, Egretta garzetta, from a breeding colony in the Camargue, southern France, tended to feed dense aggregations during early morning. Later day birds dispersed over feeding area and foraged alone. (2) Of prey captured these aggregations, 83% were mosquitofish, as revealed by regurgitates collected chicks. (3) Capture rate of individuals within an aggregation decreased rapidly with time (-0.22 fish min-2) but able improve their food intake visiting new site maximum capture rate, measured directly after initiation aggregation, only 006 min2. So egrets visited series and, result, average 6-6 min
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