ROY, Frank. Further Information on Resident Longspurs in Saskatchewan. Blue Jay, [S. l.], v. 17, n. 2, 1959. DOI: 10.29173/bluejay2241. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2241. Acesso em: 2 may. 2024.