SWITZER, Frank. Copy-Cat Feeding of House Sparrows. Blue Jay, [S. l.], v. 49, n. 2, 1991. DOI: 10.29173/bluejay5186. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/5186. Acesso em: 28 apr. 2025.