Concept explainers
If an egg rolls out of the nest, a mother greylag goose will retrieve it by nudging it with her beak and head. If researchers remove the egg or substitute a ball during this process, the goose continues to bob her beak and head while she moves back to the nest. Explain how and why this behavior occurs.
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Chapter 51 Solutions
Campbell Biology, Books a la Carte Edition & Modified Mastering Biology with Pearson eText -- ValuePack Access Card -- for Campbell Biology
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