Male mask size is correlated with mating success in the commonyellowthroat

Common Yellowthroat (Geothlypis trichas) Science Article 2


Many socially monogamous species have sexually dimorphic traits. The evolution of these traits is puzzling as sexual selection is often thought to be relatively weak in monogamous species

KEVIN J. THUSIUS et al., ANIMAL BEHAVIOUR, 2001, 62, 435-446

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