オウギワシ Harpia harpyja

Massive bird of prey, restricted to mature forest and always rare. Enormous talons. Adult is dark gray above, paler below, with obvious dark breast band. Note more obvious black-and-white barring on wings in flight to help separate it from Crested Eagle. Juvenile has whiter head than adult and no breast band; very similar to Crested Eagle but note longer crest with two points (separated in the middle). Feeds on monkeys and sloths. Usually seen perched in the canopy or flying across a road or river, does not soar.