The Diversity and habitat use by birds in urban gradients in the city of Guayaquil, Ecuador. Revista Científica Ciencias Naturales y Ambientales, [S. l.], v. 8, n. 2, p. 7, 2015. DOI: 10.53591/cna.v8i2.219. Disponível em: https://revistas.ug.edu.ec/index.php/cna/article/view/1741. Acesso em: 5 dec. 2025.