HECKER, K.; STRAUSS, L. Great Horned Owl Removes Purple Martin from Birdhouse. Blue Jay, [S. l.], v. 71, n. 2, p. 104–104, 2013. DOI: 10.29173/bluejay290. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/290. Acesso em: 22 jan. 2022.