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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Role of features and geons in predator recognition by untrained birds: the feeder experiments
 NOVÁKOVÁ, Nela
The mechanism of predator recognition in birds hasn't been understood well yet. There are two main hypotheses: recognition by components and particulate feature theory. We examined these theories in two-feeder experiment under natural conditions on wild untrained birds. We tested reactions of great tit (Parus major), blue tit (Cyanistes caeruleus), marsh tit (Poecile palustris), willow tit (Poecile montanus) and Eurasian nuthatch (Sitta europaea) to dummies of scrambled sparrow hawk (Accipiter nisus) compared to control complete sparrow hawk and pigeon (Columba livia f. domestica). Our results suggested that birds assesss all scrambled dummies equally as a real unscrambled sparrowhawk. Therefore our results support rather the particulate feature theory.
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