FORSTER, Richard A. Winter Wren, Sprague’s Pipit and Other Records at Churchill. Blue Jay, [S. l.], v. 30, n. 1, 1972. DOI: 10.29173/bluejay3679. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/3679. Acesso em: 3 may. 2024.