The CARANCHO or TRARO (_Polyborus vulgaris_ or _Polyborus Brasiliensis_) is found extensively throughout South America. The group of which this bird may be regarded as the type, is characterised by a slender body and powerful wings (in which the third quill is the longest) that extend almost to the end of the tail; the feathers of the latter are ragged at the tips, as in the tail of the Vulture. The legs are long, the toes short, and the talons strong, sharp, and but slightly curved. The beak is large, high, straight at its base, and only slightly bent. The plumage is heavy and lustreless. The feathers upon the head, neck, and breast, are narrow; those on the back large and rounded. The cheek-stripes, as well as the region of the chin and crop, are so sparsely covered with short bristles that they appear to be bare. The length of the Carancho is about one foot two inches; its breadth more than four feet; the wing measures above fourteen, and the tail above seven inches; the feathers upon the top and back of the head can be raised so as to form a crest. The back is dark brown striped with white; the wings are of the same deep shade, streaked with a paler tint upon the posterior quills and wing-covers; the cheeks, chin, throat, and upper part of the breast are white or yellowish white; the sides of the throat and breast streaked like the back. The belly, legs, and rump are of an uniform blackish brown; the tail feathers are white, tipped broadly with blackish brown and thickly covered with extremely fine brown lines; the eye is grey or reddish brown; the cere, cheek-stripes, and the bare space around the eyes brownish yellow; the beak is light blue, and the foot orange colour. The female is larger than her mate, the only other difference in appearance consisting in the comparative paleness of her coloration. The feathers upon the bodies of the young birds are pointed and have light borders, those upon the top of the head being of a deep brown, but with this exception their plumage is very dull and faded in its appearance. These remarkable birds are frequently met with in pairs, wandering over the plains of South America; but they are most numerous in the extensive regions known as the Steppes or Pampas, or near morasses. When seen upon the ground their appearance is striking and even beautiful; the crest is borne aloft, and each bird moves with an ease and bold bearing that might almost be termed majestic. Animal food of all kinds is greedily devoured by the Caranchos, and they capture mice, small birds, reptiles, snails, and insects, after the manner of Buzzards. Azara tells us that flocks of sheep if not protected by the presence of a good dog, are constantly in danger of falling victims to the attacks of these voracious marauders, who come down in parties of four or five upon the defenceless lambs, and tear out their entrails even while still alive.