BINNIE, Al. Summer Observation of White-Winged Crossbills at Regina. Blue Jay, [S. l.], v. 21, n. 4, 1963. DOI: 10.29173/bluejay2588. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2588. Acesso em: 22 jul. 2024.