Fernández-Juricic, Esteban; Siller, Steven; Kacelnik, Alex - In: Behavioral Ecology 15 (2004) 3, pp. 371-379
Social foraging differs from individual foraging because it alters both resource availability and the forager's behavior. We examined responses of starlings to the presence of conspecifics by manipulating foraging-group density experimentally, while ensuring that each subject's foraging...