Mate guarding and frequent copulation in birds: A meta-analysis of their relationship to paternity and male phenotype.

Abstract excerpt

In many birds, males are presumed to protect their paternity by closely guarding their mate or copulating frequently with her. Both these costly behaviors are assumed to reduce the risk and/or intensity of sperm competition. However, despite many studies on avian extra-pair paternity, it remains unclear how strongly these behaviors are related to fitness and other key life-history traits. Here, we conduct...

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