Closely related to A. cooperii and A. gundlachi. Race chilensis occasionally treated as full species (Chilean Hawk, as in HBW), but differences in ecology and plumage, though said to be strong, require detailed evaluation for constancy. Race guttifer has also been treated as full species, or as race of chilensis (when this given species status). Form schistochlamys (W Ecuador) incorporated in nominate race. Five subspecies currently recognized.
Food and feeding
Status and conservation
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