SASKATCHEWAN NATURAL HISTORY SOCIETY. 1947 Christmas Bird Counts--Summary of 1947 Xmas Birdcounts. Blue Jay, [S. l.], v. 6, n. 2, 1948. DOI: 10.29173/bluejay1114. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/1114. Acesso em: 11 dec. 2023.