Patterns of natal dispersal are generally sex-biased in vertebrates, i.e. female-biased in birds and male-biased in mammals. Interphyletic comparisons in mammals suggest that male-biased dispersal occ
Birdsong is a sexually selected trait that could play an important evolutionary role when related taxa come into secondary contact. Many songbird species however learn their songs through copying one
A dataset containing 3540 species occurrences available in GBIF matching the query: { "and" : [ "TaxonKey is one of (Accipiter superciliosus (Linnaeus, 1766), Anabacerthia amaurotis (Temminck, 1823),
