PHIL WILLSON, J. F. Snail shells in Tree Swallow nest boxes interest three generations of birders. Blue Jay, [S. l.], v. 80, n. 2, p. 39, 2022. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/6343. Acesso em: 9 dec. 2022.