Fuchs, Jerome; Johnson, Jeff; Mindell, David (5 March 2012). "Molecular systematics of the caracaras and allies (Falconidae: Polyborinae) inferred from mitochondrial and nuclear sequence data". Ibis. 154 (3): 520–532. doi:10.1111/j.1474-919X.2012.01222.x.
Robinson, Scott (December 1994). "Habitat Selection and Foraging Ecology of Raptors in Amazonian Peru". Biotropica. 26 (4): 443–458. doi:10.2307/2389239. JSTOR2389239.
Robinson, Scott (December 1994). "Habitat Selection and Foraging Ecology of Raptors in Amazonian Peru". Biotropica. 26 (4): 443–458. doi:10.2307/2389239. JSTOR2389239.