Extrapair Mating System of an Asynchronously Breeding Tropical Songbird: The Mangrove Swallow

Variation in the extent of extrapair paternity among avian species could result from ecological differences in breeding synchrony and/or density, or the existence or absence of paternity guards. We studied the extrapair mating system and paternity-assurance behaviors of an asynchronously breeding tropical songbird, the Mangrove Swallow (Tachy-cineta albilinea), and compared this species with the synchronously breeding temperate zone Tree …