HATCH, David. Tree Swallows Versus House Sparrows. Blue Jay, [S. l.], v. 19, n. 2, 1961. DOI: 10.29173/bluejay2316. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2316. Acesso em: 18 may. 2024.