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One of the classic studies in animal behaviour is that by Niko Tinbergen on the stimuli that elicit begging behaviour in young herring gull, Larus argentatus, chicks. Tinbergen examined which features of the beak induced chicks to peck by using various cardboard models of herring gull heads in different shapes and colours. Leiden University, home university to Tinbergen at the time, still has a summarizing...
Young herring gull, Larus argentatus, chicks peck at the red patch on the lower mandible of their parent's yellow beak. In a famous study on the ‘instinctive behaviour’ of herring gull chicks, Tinbergen examined whether the presence, colour and position of the patch affected the pecking of the chicks. While this experiment is often cited as demonstrating a preference for a red patch, the original...
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