First Observed Instance of Polygyny in Flammulated Owls

摘要: Abstract We document the first observed instance of polygyny in Flammulated Owls (Otus flammeolus) and among insectivorous raptors. Chronologies male's two nests, which were 510 m apart, separated by nearly 2 weeks. Each brood initially consisted three owlets, similar to mean size monogamous pairs. The male delivered considerably fewer prey secondary nest, compared with prey-delivery rates at nests males during nestling period. Evidence suggested that all owlets fledged from primary brood, but only one brood. uncertain cause polygyny, a possible explanation is Hayman Fire shifted operational sex ratio owls favor females. extent may be limited costs reproductive success