SWENGEL, Scott; SWENGEL, Ann. Owl Calls. Blue Jay, [S. l.], v. 45, n. 2, 1987. DOI: 10.29173/bluejay4855. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4855. Acesso em: 4 may. 2024.