Data from: Extra-pair paternity in two populations of the socially monogamous Thorn-tailed Rayadito Aphrastura spinicauda (Passeriformes: Furnariidae)

Esteban Botero-Delgadillo, Verónica Quirici, Yanina Poblete, Silvina Ippi, Bart Kempenaers & Rodrigo Vasquez
Studies on extra-pair paternity (EPP) are key to understanding the ecological and evolutionary drivers of variation in avian mating strategies, but information is currently lacking for most tropical and sub-tropical taxa. We describe the occurrence of EPP in two populations of a South American socially monogamous bird, the Thorn-tailed Rayadito, based on data from 266 broods and 895 offspring that were sampled during six breeding seasons in north-central and southern Chile. In the northern population,...
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