WESELOH, D. V.; LANG, Virginia. Glaucous-Winged Gull and Thayer’s Gull at Calgary. Blue Jay, [S. l.], v. 31, n. 4, 1970. DOI: 10.29173/bluejay3802. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/3802. Acesso em: 3 jul. 2024.