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I first met with this bird above the three forks of the Missouri and saw them on the hights of the rocky Mountains but never before had an opportunity of examining them closely. the small corvus discribed at Fort Clatsop is a different speceis, tho untill now I had taken it to be the same, this is much larger and has a loud squawling note something like the mewing of a cat. the beak of this bird is 11/2 inches long, is proportionably large, black and of the form which characterizes this genus. the upper exceeds the under chap a little. the head and neck are also proportionably large. the eye full and reather prominent, the iris dark brown and puple black. it is about the size and somewhat the form of the Jaybird tho reather rounder or more full in the body. the tail is four and a half inches in length, composed of 12 feathers nearly of the same length. the head neck and body of this bird are of a dove colour. the wings are black except the extremities of six large fathers ocupying the middle joint of the wing which are white. the under disk of the wing is not of the shining or grossy black which marks it's upper surface. the two feathers in the center of the tail are black as are the two adjacent feathers for half their width the ballance are of a pure white. the feet and legs are black and imbricated with wide scales. the nails are black and remarkably long and sharp, also much curved. it has four toes on each foot of which one is in the rear and three in front. the toes are long particularly that in the rear. this bird feeds on the seed of the pine and also on insects. it resides in the rocky mountains at all seasons of the year, and in many parts is the only bird to be found. our hunters brought us a large hooting Owl which differs considerably from those of the Atlantic States which are also common here. the plumage of this owl is an uniform mixture of dark yellowish brown and white, in which the dark brown predominates. it's colour may be properly termed a dark iron grey. the plumage is very long and remarkably silky and soft. these have not the long feathers on the head which give it the appearance of ears or horns. the leathers of the head are long narrow and closely set, they rise upwright nearly to the extremity and then are bent back sudonly as iff curled. a kind of ruff of these feathers incircle the thoat. the head has a flat appearance being broadest before and behind and is 1 foot 10 Is. in circumference. incircling the eyes and extending from them like rays from the center a tissue of open hairy long feathers are placed of a light grey colour, these conceal the ears which are very large and are placed close to the eyes behind and extending below them. these feathers meet over the beak which they nearly conceal and form the face of the owl. they eyes are remarkably large and prominant, the iris of a pale goald colour and iris circular and of a deep sea green. the beak is short and wide at it's base. the upper chap is much curved at the extremity and comes down over and in front of the under chap. this bird is about the size of the largest hooting Owl. the tail is composed of eleven feathers, of which those in the center are reather the longest. it is booted to the extremity of the toes, of which it has four on each foot, one in the rear one on the outer side and two in front. the toes are short particularly that in rear, but are all armed with long keen curved nails of a dark brown colour. the beak is white and nostrils circular large and unconnected. the habits and the note of this owl is much that of the common large hooting owl.