Mr. Gibson compares its cry to a "wild human laugh," and also writes:--"Its whereabouts may often be detected by an attendant flock of Caranchos (_Polyborus tharus_), particularly in the case of a young bird. As soon as it rises from the ground or from a tree, these begin to persecute it, ascending spirally also, and making dashes at it, while the Eagle only turns its head watchfully from side to side, the mere action being sufficient to avert the threatened collision." Gay, in his 'Natural History of Chili,' describes the affectionate and amusing habits of an Eagle of this species which he had tamed. It took great delight in playing with his hand, and would seize and pretend to bite one of his fingers, but really with as much tenderness as a playful dog displays when pretending to bite its master. It used also to amuse itself by picking up a pebble in its beak, and with a jerk of its head toss it up in the air, then seize it in its claws when it fell, after which it would repeat the performance. 301. HARPYHALIAËTUS CORONATUS (Vieill.). (CROWNED HARPY.) +Harpyhaliaëtus coronatus+, _Scl. et Salv. Nomencl._ p. 119; _Hudson, P. Z. S._ 1872, p. 536 (Rio Negro); _Sharpe, Cat. B._ i. p. 221. _Description._--Above ashy brown, with a long occipital crest of darker feathers; wings grey with blackish tips; tail black, with a broad white median band and white tip: beneath paler ashy brown, thighs blackish: whole length 33 inches, wing 22·0, tail 13·5. _Female_ similar, but larger. _Hab._ South America.