Pinheiro, Leonardo Victor Soares, et al. “First Documented Record of Leucopternis Melanops (Latham, 1790) (Aves: Accipitridae) in the State of Maranhão and Update of the Geographic Distribution of This Species in Brazil”. Boletim Do Museu Paraense Emílio Goeldi - Ciências Naturais, vol. 16, no. 1, May 2021, pp. 131-43, https://doi.org/10.46357/bcnaturais.v16i1.450.