FRIESEN, Victor C. Ruffed Grouse: Crazy-Flight Conclusions. Blue Jay, [S. l.], v. 48, n. 1, 1990. DOI: 10.29173/bluejay4974. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4974. Acesso em: 4 apr. 2025.