SYMONS, Robert D.; NERO, Robert W. Black-Headed Grosbeak Breeding Record for South-Central Saskatchewan. Blue Jay, [S. l.], v. 23, n. 2, 1965. DOI: 10.29173/bluejay3051. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/3051. Acesso em: 22 jul. 2024.