Monnerat Nogueira, Denise, and Maria Alice S. Alves. 2008. “Iris Colour As an Indicator of Age Feature in Female Brazilian Tanagers (Passeriformes: Emberizidae) Confirmed by a Molecular Sexing Technique”. Revista De Biología Tropical 56 (4):1629–1633. https://doi.org/10.15517/rbt.v56i4.5749.