LORAN, Dan. Cliff Swallows are Gathering Mud. Blue Jay, [S. l.], v. 73, n. 2, p. 87–88, 2015. DOI: 10.29173/bluejay308. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/308. Acesso em: 5 may. 2024.