GERRARD, Peter. Spruce Grouse - Spring Behaviour. Blue Jay, [S. l.], v. 77, n. 4, p. 32–33, 2019. DOI: 10.29173/bluejay2133. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2133. Acesso em: 16 apr. 2025.