ERSKINE, A. J.; GOLLOP, J. B. Keeping Track of Saskatchewan’s Birds. Blue Jay, [S. l.], v. 37, n. 1, p. March 1979–37, 1979. DOI: 10.29173/bluejay4545. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4545. Acesso em: 6 may. 2024.