28 NE8T8 AND EGGS OF 



eaweed. Some of the nests are quite flat, while others are several inches in 

 ::e?r, and deeply hollowed, new material beinrr added each year, and they are 

 some; imc-rous that the- breeding [laces become very filthy and emit an In- 



,:ble odor. The eggs are two and sometime.-. iliree in number, and h. 



iwish buff, brownish-gi. le greenish-gray, marked with 



Irregular spots of varying shades of brown and lilac. The a is L'.L 



40. PACIFIC KITTIWAKE. IHsfta tritlnrliiln itnllirtirix Ridgw. Geog. 

 Dist. Coasts of North Pacific and Bering Sea. 



This form of tin- Kittiwake is abundant on the islands of the North Pacific. It 



is abundant along the entire coast line of Alaska and on all the numerous islands. 



The bird is resident upon the Aleutian Islands and breeds in great abundance upon 



all the islands rf Bering Sea, the Straits, and along the Arctic coast to Tape Lis- 



burne. Dr. Leonhanl Stejneger records it as a common breeding bird, both on the 



is and along the Kamtschatkan coast, and in all places suitable for rookeries 



are found in astonishing numbers. For the purpose of nesting they select the 



shelves and projections of cliffs, the tops of walls that rise perpendicularly out of the 



.-a, and especially on the high pinnacles standing lonely amidst the foaming 



breakers. The nest is composed of matted fragments of moss and grass, and fre- 



quently the eggs are deposited in mere hollows in the loose dirt. The nesting is 



precisely the same as that of /.'. Iritlactyla, and the eggs are indistinguishable, ex- 



hat in a large series they are said to be more uniform in their markings. 



41. RED-LEGGED KITTIWAKE. /'/..-/ hrrriniKtrix (Bruch.) Geog. Dist. 

 Coasts and islands of Bering Sea. 



The living bird of this species has coral-red legs and feet, which contrast richly 

 with the snowy white plumage of the head, neck and under parts. An abundant 

 species on the islands of Bering Sea. On the Prybilof group it swarms by tens of 

 thousands to breed in the first part of May. It is especially abundant on St. 

 George's and St. Paul's Islands. The nests, like those of the Pacific Kittiwak< 

 placed on almost inaccessible shelves and projections, so that seldom is a nest 

 nless a person is lowered down to it on a rope passed over the cliff. Dry 

 grass and moss cemented with mud are the materials which constitute the i 

 The Red-legged Kittiwake is common on the islands along the Kamtscliatkan coast. 



>ly on Cor it breeds in company with />o//iVf/r/x. The 



have a ground-Color Of brownish white, varying to light drab and buff, marked with 

 brown and umber; ' ;nderlain by subdued shade;; and cloud- 



ings of lila verage size of the egg is : 



42. GLAUCTJS GULL, l.arnx i/lutim* P-rnnn. Gh 



south in North real Lakes and ! nd. North Pacific-. 



ial. in fact, to the Great IMack-backed Gull, 

 bird of high northern range during the b- 



nd the mop- northern portin 

 North . \mericri. In . i in iiuni'-ns" numbers, plaein 



: ruc- 



Th- l?ir ds on 



1 ll'-r birds and hein of t lr 'id young. 



It attends fishing boats for the purpose of devouring the offal which may bo thrown 

 overboard. The bin: 'dent of C.reenland. In Hudson Hay 



region It builds its nests on the isbr ! rivers, and the young are hatched 



