THE BIRD BOOK 



iOa. Pacific Kittiwakk. UiKsa tridac- 

 ti/ld pollicaris. 



Range. — Coast of the North Pacific, wintering 

 south to California. 



The Pacific Kittiwake t^reeds in immense roolc- 

 eries on soiiie of the islands in Bering Sea. They 

 are well distributed over Copper Island where 

 they nest in June and July, choosing the high 

 ledges which overhang the sea. The nesting 

 habits and eggs are precisely the same as those 

 of the common Kittiwake. 



11. 



Reu-leggeu Kittiwake. Uissd hrcvi- 

 rostris. 

 Range. — Northwestern coasts, breeding in high 

 latitudes. 



This Kittiwake is similar to the preceding, with 

 the exception that the legs are bright red, the 

 mantle is darker, and the bill is shorter. This 

 species was found by Dr. Leonard Stejneger to be 

 a very abundant nesting bird on islands in Ber- 



'il-lt^2;g-ed Kittiwake 



Glaucnus Gull 



Brownish buff 



~'' ing Sea, selecting steep and inaccessible rocks and ledges on which to build 



^ its nest. Their nesting habits are precisely the same as the Pacific Kittiwake, 



but they most often nest in separate colonies, but can be distinguished readily 



"V when nesting together by the darker mantles when on the nest and the red 



^ legs when flying. Grass, moss and mud are used in the nest. The ground color 



of the eggs is butty or brownish, and the spots are dark brown and lilac. 



Size 2.15x1.50. 



12. Glaiicoi's (tI'll. Lariia liypcrhoreuf;. 



Range. Arctic regions, south In winter to Long Island, the Great Lakes, and 

 San Francisco Bay. 



This Gull shares with the Great Black backed Gull the honor of being 



the largest of the Gulls, being 28 inches in length. Mantle light gray; it is 



distinguished by its size and the primaries, which are white to the tips. A 



powerful Ziird that preys upon the smaller Gulls and also devours the young 



~ and eggs of smaller birds. 



^^ They nest on the ground on the islands and shores of Hudson Bay, Green- 



^ X^ land, etc. The nest is made of seaweed, grass and moss and is generally quite 



"^ bulky. The two or three eggs are laid in June. They are of variovis shades of 



~ color from a light drab to a brownish, and are spotted with brownish and 



~^ black. Size about 3 x 2.20. 



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