HOUSTON, C. Stuart; MCGOWAN, Kevin J. The westward spread of the barred owl. Blue Jay, [S. l.], v. 57, n. 4, 1999. DOI: 10.29173/bluejay5645. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/5645. Acesso em: 13 apr. 2025.