ORNITHOLOGICAL EXPLORATIONS. 



263 



especially close to the sea and inaccessible to any other beings than those 

 provided with wings. In fact, I do not think that a single pair breeds 

 in the interior of the islands, but after the young are out, the whole 

 family will often move inland, following the rivulets up to the backbone 

 of the mountains in the search for insects. Thus I met a small troop on 

 the 10th of July, 1883, on Copper Island, pretty near midway between 

 the two shores. The call-note of the young birds was deeper and lower 

 than that of the adults, being almost thrush-like. 



Many pairs, perhaps most of them, produce two broods in the year, and 

 in the beginning of July, when they had iinished the first one, I found 

 several pairs in hot pursuit of their love affairs. 



List of specimens obtained. 



Locality. 



Bering Island . . 

 Copper Island 

 Bering Island . 

 Copper Island . 



do , 



do 



d(j 



do 



do 



do 



do 



Jan. 8, 1883 

 June 23, 1882 

 May 21, 1883 

 June 29, 1883 

 July 5,1883 

 June 28, 1883 

 June 29, 1883 

 June 30, 1883 

 Ju'y — , 1882 

 July 11, 1883 

 July 7,1883 



cfad. 

 cfad. 

 (cDad. 

 cfad. 

 cfad. 

 $ad. 

 ?ad. 

 $ad. 



ad. 



ad. 

 juv. 



mm. 

 205 

 204 



(197) 

 214 

 213 

 196 

 210 

 200 



mm. 

 40 



mm. 

 122 

 123 

 120 

 122 

 123 

 111 

 119 

 114 

 124 

 112 

 116 



mm. 

 85 

 85 



84 



No. 92634.— Iris dark hazel. Bill orange-yellow, tip of both mandibles blackish. Feet black, both 

 above and below. Stomach filled with coarse sand mixed with a few seeds. Tip of wings reaches tip 

 of outer toe of the legs stretched backwards. 



No. 89129.— Iris hazel. Bill brownish black. Feet black, under side of toes with a yellowish tinge. 

 In the stomach small black seeds. 



No. 92641. — Bill black ; a small faint yellowish spot at base of the tomia of the upper mandible, and 

 another near the base of the gonys. 



No. 92637.— Bill horny blackish brown, lower mandible lighter, especially at base tinged with yel- 

 lowish ; angle of mouth and adjoining parts of mandibles pale yellow. Feet black. On abdomen and 

 breast a large, naked patch. Gullet crammed with an enormous mass of food, consisting of (1) sev- 

 eral dozens of a Coleopterous insect, and (2) a similar number of larva;, &c., (3) besides leaves and 

 buds of Cochlearia, and (4) some seeds. 



No. 92638.— Bill at base of culmen, tomia, and gonys yellowish, the remaining parts olive blackish 

 brown. Gullet filled with leaves of some Ericaceous plant; no trace of insects. 



No. 92642.— Iris dark hazel. Bill ochraceous yellow, dusky towards the tip ; angle of mouth lighter 

 and brighter yellow. Feet very dark grayish brown. 



