Cuyo (McGregor).

Adult male, light phase, type.—Feathers of head and neck heavily streaked with blackish brown, the edges more or less notched with whitish and light rufous; ear-tufts also blackish, but edges rufous; back dark rufous, finely speckled with blackish, clearer rufous on upper tail-coverts; each outer scapular with a large white spot on outer web followed by a blackish spot on tip and bordered toward base by a dark brown line; chin and upper throat whitish with narrow brown shaft-stripes, the webs marked more or less with cinnamon; remainder of under parts dark cinnamon, more or less cross-barred with white and dark brown, each feather with a blackish brown shaft-stripe; the coloration heaviest across upper breast because of the greater width of the shaft-stripes and reduction of the white areas; middle of abdomen almost pure white; flank-feathers with narrow shaft-lines and wide white bars; thighs rufous-brown; wings mostly sandy cinnamon more or less mottled with brown; outer webs of primaries regularly notched with five or six spots of white or whitish cinnamon, bordered with dark brown; similar notches on secondaries but less prominent owing to darker color of spots; quills below brownish with slightly lighter, irregular, and almost obsolete bars; alula with similar light notches on outer webs, on the first feather the notches are white; coverts generally uniform, but some feathers of median series with large white patches on outer webs; tail similar to the back with about eight irregular and nearly obsolete cross-bars; short plumulaceous feathers below and behind the eye finely mottled with pale cinnamon, brown, and whitish; behind ear, feathers of the incomplete ruff broadly tipped with blackish brown forming a prominent dark band on side of head; bristle-like feathers of lores with bases whitish, tips blackish brown, the longest about 20 mm.; anterior bristles pale cinnamon; tarsus feathered to base of toes. Bill, cere, and feet dirty brown; nails horn-brown; iris yellow. Length, 235; wing, 170; tail, 82; culmen, 23; tarsus, 35; middle toe with claw, 33.

Adult female, light phase.—Not greatly different from the male, but white notches on primaries and alula with a cinnamon wash. Length, 235; wing, 175; tail, 88; culmen (tip broken), 21; tarsus, 35; middle toe with claw, 32.

Red phase.—The pattern of coloration is the same as in the light phase; white and whitish markings nearly all replaced by rufous; chin and upper throat and modified feathers below and behind eye almost clear rufous; blackish brown markings on breast very wide; a few whitish bars on abdomen and flanks.

218. OTUS CALAYENSIS McGregor.
CALAYAN SCREECH OWL.

Cok-cok bá-buy, Calayan.

Calayan (McGregor).

Adult male, light phase; type.—Lower parts dark cinnamon finely mottled with brown and white, a few feathers on throat and breast with dark brown shaft-stripes or spots; abdomen, flanks, and under tail-coverts extensively white with very little cinnamon and the brown mostly reduced to fine speckles; thighs and tarsi cinnamon with cross-lines of dark brown; upper parts dark rufous finely mottled with blackish brown, producing a rather uniform coloration; lores, continuous with a line above eyes, white; tips of nasal and loral bristles dusky brown or cinnamon, the longest about 20 mm.; modified feathers of ear-coverts and below eye finely speckled with white and dark brown; behind this the incomplete ruff forms a conspicuous rufous band along side of head, but most of the feathers tipped with dusky brown; feathers of ear-tufts dark rufous with irregular blackish spots toward tips; wing-coverts and scapulars about same as back, some of the latter with a large white area on outer web; exposed surface of quills and tail similar and a little lighter than back; tail crossed by several irregular lighter bars; quills dusky brown; outer webs of outer primaries notched with pale cinnamon; inner webs of quills crossed by pale cinnamon bars which become very wide on secondaries; tarsi feathered nearly to toes. Bill, feet, and nails brown, the feet with a slight green wash; iris bright yellow. Length, 216; wing, 169; tail, 85; culmen, 21; tarsus, 31; middle toe with claw, 29.