18 NESTS A2fD EQOS OF 



28. BtANDT'S GTJILLEMOl?. Cepphus mandili (Licht.) Geog. Dist.— Arctic 

 regions of both continents; south on the Atlantic coast of North America in winter 

 to New Jersey, breeding to Hudson's Bay and Labrador; Alaslcan coast, south In win- 

 ter to Norton Sound. 



The Sea Pigeon, as it is called, breeds abundantly on the coast and islands of 

 the North Atlantic. It is very abundant from Labrador and Hudson's Bay north- 

 ward, nesting in the holes and crevices of rocks, often in the most inaccessible 

 places. The eggs are laid in June and July. The usual complement is two, oftea _ 

 three. These vary from white to a pale greenish-white, light drab, yellow or buff, 

 marked irregularly with spots and blotches of different shades of brown and black, 

 thickest at the great end, where they are usually almost a confluent ring; they are 

 oval or elliptical in form; size about 2.30x1.55, but, like nearly all eggs in a large 

 series, there is a great variation in the size, shape, anfl also in the style of mark- 

 ings, etc. 



29. PIGEON GUILLEMOT. Cepphus columba (Pall.) Geog. Dist.— Coasts 

 and islands of the North Pacific, southward from Bering Strait to Northern Japan 

 atud Southern California. 



On the Pacific coast of North America this species is found breeding from San 

 Nicholas Island northward to the islands of Bering Sea. Dr. Leonhard Stejneger 

 says that it is a very common bird on Bering and Copper Islands; its eggs v/ere col- 

 lected %t the latter place June 16th.* Mr. Taylor says: "The Pigeon Guillemot (so 

 like a Guillemot and so like a Pigeon) is found in rather limited numbers [on tha 

 Farallons.] Most interesting are these pretty, graceful birds looking so petite and 

 modest among an army of clamoring Gulls. I believe the questioned statement that 

 they gather small stones for a nest is true, in most instances. I noted the flat stones 

 and pebbles about their eggs often and they did not appear to be accidental."! Mr. 

 Emerson says egg-laying on the Farallons begins about the first of May/ or shortly 

 after, and continues into July. Two eggs is the number laid, and they, are deposited 

 in the crevices of rocks or in dark nooks under boulders, often near the water's 

 edge. If the eggs are taken the foolish bird will lay again in the same plaice. The 

 favorite resting place of these birds is -on the rock just above the foaming surf, where 

 they sit in pairs and "converse" with one another in low whistling notes. In a large 

 series of eggs the ground color varies from light pearl gray to greenish-blue; their 

 general shape is like that of the Gulls' eggs, rounded oval at the large end and point- 

 ed at the smaller. The markings are of two shades of lilac; in some they are thickly 

 spread over the entire surface; in others they form a circle about the larger end. 

 Mr. Bryant gives the average measurment of twenty-five sets of two eggs each in 

 Mr. Emerson's collection as, 61.6 by 41.4 mm.^ Extremes in size, 66.5 by 41.5, 58.5 by 

 41 millimeters. § 



30. • MTJBBE. Uria troile (Linn.) Geog. Dist. — Coast and islands of the North 

 Atlantic, southward on the coast of North America in winter to Southern New Eng- 

 land; breeding from Nova Scotia northward. 



• Bulletin of the United States National Museum. No. 29. Results of Ornithological 

 Explorations In the Commander Islands and Kamtsohatka. By Leonhard Stejneger, 

 t In Nidologist, Vol. I, p. 19. 

 1 2.43x1.62: ' , , 



§ 2.62x1.63, 2.30x1.61. 



