The Chaco eagle or crowned solitary eagle (Buteogallus coronatus), typically known simply as the crowned eagle (leading to potential confusion with the African Stephanoaetus coronatus) is an endangered bird of prey from eastern and central South America. This is a large raptor with a length of 73–79 cm (28.5–31 in), a wingspan of 170–183 cm (67–72 in) and an average weight of 2.95 kg (6.5 lb) Adults are almost entirely gray with a large occipital crest and a short, black-and-white-banded tail. The juvenile is gray-brown on the back and pale with gray-brown streaks on the head and underside.