BRAZIER, Frank. Courtship Behavior of a Pair of Black-Billed Magpies. Blue Jay, [S. l.], v. 55, n. 3, 1997. DOI: 10.29173/bluejay5518. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/5518. Acesso em: 28 apr. 2025.