URIA 865 



Guillemot grylle , French : Gryll-Teiste, German; Theista, Icel. ; 

 Almindelig Teiste, Dan.; Teiste, Per-drikker, Norweg. ; Tobis- 

 yrisla, Swed. ; Rislcila, Finn. 



$ ad. (Greenland). General plumage deep black, the upper parts 

 with a greenish gloss, the under parts tinged with brownish ; central and 

 larger wing-coverts white, but black on the concealed bases of the feathers, 

 forming a large white alar patch ; bill black ; legs and feet rich vermilion 

 or coral-red ; iris dark brown. Culmen 1'4, wing 6'4, tail 2 '2, tarsus T15 

 inch. Sexes alike. In winter the crown is white marked with black ; 

 back and rump black, the feathers margined with white, the latter nearly 

 all white ; wings and tail as in summer ; rest of plumage white. 



Hob. North Atlantic east to the White Sea ; the Baltic and 

 coasts of Scandinavia, Germany, and Northern France ; breeds 

 on the coasts of Britain; on the American coasts, from S. 

 Greenland and Labrador, south to New Jersey in winter. 



Like A. troile it is essentially a sea bird, usually found far 

 out at sea, except during the breeding season, but it lives in 

 pairs and does not breed in societies. It swims with ease, dives 

 like a flash, and its flight is swift and direct. Its food consists 

 of Crustacea and small fish, which it obtains chiefly by diving. 

 Unlike A. troile it does not deposit its eggs on the bare ledges 

 of cliffs, but in a cleft in the rock, or under a boulder, sometimes 

 near the water's edge, and at others at a considerable altitude, 

 and makes no nest. Its eggs, 2 to 3 in number, are usually 

 deposited late in May or in June, and are white or greenish 

 white with purplish grey shell-markings, and blackish brown 

 surface spots and blotches, some being but scantily, others very 

 richly marked. In size they measure about 2*41 by 1*62. 



1193. MANDT'S GUILLEMOT. 

 URIA MANDTI. 



Uria mandti, Licht. in Mandt. Observ. &c. Diss. Inaug. p. 30 (1822) ; 

 Dresser, viii. p. 587 ; (Tacz.), F. 0. Sib. 0. p. 1221 ; Ogilvie Grant, 

 Cat. B. Br. Mus. xxvi.p. 584 ; (Ridgway), p. 16. 



<J ad. (Spitsbergen). Differs from U. grylle in having the bill slightly 

 smaller, and the feathers constituting the white alar patch white to the 

 base. Culmen 1-5, wing 6'4, tail 2-0, tarsus ri inch. In winter the upper 

 parts are whiter than in U. grylle. 



Hob. Coasts of the circumpolar seas, to Franz Josef's Land, 

 Spitsbergen, Novaya Zemlya, North Greenland, and Arctic 

 America, south to Labrador and Hudson's Bay ; in the North 



