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LECTURE 15 BEHAVIORAL ECOLOGY. The selfish herd. Some animals live in groups simply to ‘use’ others as a shield against predators.
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The selfish herd Some animals live in groups simply to ‘use’ others as a shield against predators. Example – bluegill fish, where the largest, most powerful male protects the eggs in the center of the nest, while the smaller males assemble around them and bear the predatory attacks that may come from bass.