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National Repository of Grey Literature 22 records found  beginprevious21 - 22  jump to record: Search took 0.01 seconds. 
Pigeon with sparrowhawk head: friend or enemy?
 NÁCAROVÁ, Jana
The mechanism of predator recognition hasn´t been understood well yet. There are two main theoretic attitudes to this problem. Feature theory claims that animals use only some key features of the stimuli for categorization. The other opinion is that animals have a general concept how the predator should look like and local features aren't so important. We examined these theories under labor conditions. We tested the reaction of great tit (Parus major) on wooded dummies of the sparrowhawk (Accipiter nisus), pigeon (Columba livia f. domesticus) and chimeras between them that differed in the type of head. Our results show, that great tits probably use combination of both approaches to recognize the predator.
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The role of personility in bird reaction to conspiciously coloured prey
 TESAŘOVÁ, Monika
Personality and individual differences in reactions of the Great tit to aposematic prey were investigated. The aim of this study was to assess differences in personality of forty Great tits and find out possible correlation to the reactions of these birds to aposematic prey, the fifth larval instar of firebug Pyrrhocoris apterus.
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National Repository of Grey Literature : 22 records found   beginprevious21 - 22  jump to record:
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