Bill very slender; one inch seven or eight lines in length: tail rounded; wings extending a little beyond its extremity: tarsus one inch nine lines.
P. Anglorum, Temm. Man. d'Orn. torn. ii. p. 806. Shearwater, Mont. Orn. Diet. Bew. Brit. Birds, vol. ii. p. 241. Manks Shearwater, Selb. Illust. vol. ii. p. 529. pl. 102.
Entire length fourteen inches: length of the bill (from the forehead) one inch six lines, (from the gape) one inch nine lines; of the tarsus one inch nine lines; of the tail three inches seven lines; from the carpus to the end of the wing nine inches six lines.
Forehead, crown, nape, and all the upper parts, including the wings and tail, deep grayish black, with a slight gloss: sides of the neck mottled with indistinct transverse bars of gray and white: chin, throat, and all the other under parts, pure white: some of the under tail-coverts black on their outer webs: bill yellowish brown at the base, dusky towards the tip: legs gray; the front of the tarsus, and part of the webs, yellowish white, tinged with flesh-red. (Egg). White: long, diam. two inches five lines; trans, diam. one inch nine lines.
Formerly very abundant during the breeding season in the Calf of Man, but less so of late years. Common in the Orkneys, and some other of the Scotch Islands, to which they resort in February or March. Builds in the interstices of rocks, sometimes in rabbit-burrows, laying but one egg. Food, fish, and marine insects and worms. Habits crepuscular; seldom appearing abroad during the bright sunshine.