GOLLOP, J. B. Mallard Goes North After Nesting. Blue Jay, [S. l.], v. 18, n. 2, 1960. DOI: 10.29173/bluejay2286. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2286. Acesso em: 2 may. 2024.