Because their feet are not adapted to process prey items, shrikes carry large items to thorny vegetation and/or barbed wire fences and promptly impale the prey upon a thorn or barb. This behavior ...
Intro; Abstract; Acknowledgements; Contents; Chapter 1: How to Study Predator Recognition; 1.1 Observation in the Wild; 1.2 Experiments; 1.2.1 Experiments on Nests; 1.2.2 Experiments on Winter Feeders ...
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