BITTNER, Ronald A. Experimental Nestboxes for Bluebirds: An Update. Blue Jay, [S. l.], v. 53, n. 4, 1995. DOI: 10.29173/bluejay5140. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/5140. Acesso em: 3 may. 2024.