Lopes, Leonardo Esteves, and Luiz Pedreira Gonzaga. “Morphological Data Support the Recognition of Four Species in the Genus Sirystes Cabanis &Amp; Heine, 1859 (Aves: Tyrannidae)”. Zootaxa 4127, no. 3 (June 24, 2016): 401–431. Accessed April 5, 2025. https://mapress.com/zt/article/view/zootaxa.4127.3.1.