Tail rather long, moderately rounded; plumage white; head and back spotted; wings, tail, and lower parts barred with dusky brown. Young pure white. Individuals vary much in markings. _Male_, 21, 53. _Female_, 26, 65. From South Carolina on the east, and Columbia River on the west, northward. Migratory. Snowy Owl, Strix nyctea, Nutt. Man. v. i. p. 116. Snowy Owl, Strix nyctea, Aud. Amer. Orn. v. ii. p. 135: v. v. p. 382. 29. 3. Surnia passerina, Linn. Passerine Day-Owl.--Little Night Owl. Plate CCCCXXXII. Fig. 3. Female. Tail rather short, arched, nearly even; wings almost as long as the tail, the outer four quills cut out on the inner web, the outer five sinuated on the outer; filaments of the first free and slightly recurved, as are those of the second and third beyond the sinus. General colour of upper parts chocolate-brown, the feather of the head with an oblong median white mark; hind neck with very large white spots, forming a conspicuous patch; on the back most of the feathers with a single large subterminal roundish spot, as is the case with the scapulars and wing-coverts, most of which, however, have two or more spots; quills with marginal reddish-white spots on both webs, the third with six on the outer and four on the inner, with two very faint pale bars toward the end; the tail similarly marked with four bands of transversely oblong, reddish-white spots; feathers of the anterior part of the disk whitish, with black shafts, of the lower part whitish, of the hind part brown tipped with greyish-white; a broad band of white crossing the throat, and curving upwards on either side to the ear; a patch of white on the lower part of the fore-neck; between these a brownish-grey band. Lower parts dull yellowish-white, each feather with a broad longitudinal band of chocolate-brown; abdomen and lower tail-coverts unspotted; tarsal feathers dull white. _Female_, 10-1/2; wing from flex. 6-1/4; tail 3-1/2. From Nova Scotia eastward. Rather rare. Little Night Owl, Strix passerina, Aud. v. v. p. 269. 31. 5. Surnia cunicularia, Gmel. Burrowing Day-Owl. Plate CCCCXXXII. Fig. 1. Male. Fig. 2. Female.