Rio de Janeiro, Brazil.
Affinities somewhat uncertain; new monotypic genus Amadonastur recently proposed for this species#R. Previously placed in Leucopternis, where was considered probably closest to L. melanops and L. kuhli of Amazonia; recent molecular studies indicate that present species is part of a clade which also contains B. urubitinga, B. solitarius and B. coronatus (last two previously placed in Harpyhaliaetus)#R#R. Monotypic.
E Brazil from Paraíba, Pernambuco#R, Alagoas and S Bahia to São Paulo, Paraná and, at least formerly, Santa Catarina.
Food and feeding
Status and conservation
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