HJERTAAS, Dale. Unusual Barn Swallow Nest Site. Blue Jay, [S. l.], v. 49, n. 4, 1991. DOI: 10.29173/bluejay5079. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/5079. Acesso em: 21 nov. 2024.