PATTERSON, John; JENSEN, Ron; BLENKIN, Carol. Magpies Roost at Saskatoon in Record Numbers. Blue Jay, [S. l.], v. 80, n. 3, p. 12–13, 2023. DOI: 10.29173/bluejay6353. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/6353. Acesso em: 16 apr. 2024.