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Article
Bianca P. Vieira, Auteur ; Robert W. Furness, Auteur ; Ruedi G. Nager, AuteurIdentifying sexes in birds from visual observations could be a useful and inexpensive method. While sexual dichromatism and ornaments are readily used by observers, sexual size dimorphism can also be used to identify sexes in some bird species. [...]
Article
Bianca P. Vieira, Auteur ; Robert W. Furness, Auteur ; Ruedi G. Nager, AuteurMethods to obtain moult data from wild birds have not changed much over the last century and most studies still depend on checking museum specimens or capturing birds. Here we assess the applicability of systematic field photography for detectin[...]
