Extra-pair paternity and tail ornamentation in the barn swallow Hirundo rustica

• Females of socially monogamous species may copulate with attractive non-mates to obtain access to the genes of such males, and a preference for attractive copulation partners may result in sexual selection. Extra-pair copulations are common in the sociall

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DNA fingerprinting; paternal care; paternity guards; repeatability; sexual selection; RED-WINGED BLACKBIRDS; MALE PARENTAL CARE; ZEBRA FINCHES; SPERM COMPETITION; SEXUAL SELECTION; TREE SWALLOWS; DNA; EVOLUTION; COPULATIONS; FEMALE

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