RIBEIRO, Adauto de Souza; FERRARI, Stephen Francis. Birds of the Grota do Angico Natural Monument in the semi-arid Caatinga scrublands of northeastern Brazil. Biota Neotropica, Sao Paulo, Brazil, v. 11, n. 2, 2011. Disponível em: https://www.biotaneotropica.org.br/BN/article/view/793. Acesso em: 14 nov. 2025.