LIVEZEY, Bradley C. Comparative morphometrics of Anas ducks, with particular reference to the Hawaiian Duck Anas wyvilliana, Laysan Duck A. laysanensis, and Eaton’s Pintail A. eatoni. Wildfowl, [S. l.], v. 44, p. 75–100, 1993. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154693. Acesso em: 15 apr. 2026.