SASKATCHEWAN NATURAL HISTORY SOCIETY. Watch For Eastern Bluebirds. Blue Jay, [S. l.], v. 22, n. 1, 1964. DOI: 10.29173/bluejay2800. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2800. Acesso em: 7 dec. 2025.