574 KORTH AMEIilCAX BIRDS. 



mu(l. I'^j'js 2-5, l.Oi X ■'''2, plain greenish blue. Ilah. Eastern 

 United States, in summer, north to southern Michigan, Ontario, 

 ^Massachusetts, etc.; south, in winter, to Guatemala and Cuba. 



755. T. mustelinus Gmel. Wood Thrush. 

 }/. Sides grayish or brownish, without distinct spots ; chest more or loss tinged 

 with buft", and marlccd with triangular darker spots; exposed culmen 

 not more than .GO. 

 c'. Second quill much longer than fifth, the second or third longest; tail 

 and its upper coverts not noticeably diflcrent in color from other 

 ujipcr parts (except sometimes in T. ustitlatus). 

 (V. No distinct lighter orbital ring. 



e". Above tawny brownish, the chest buffy or light ochraceous, 

 marked with small wedge-shaped spots or streaks of brown. 

 Kest on or near ground, without mud in its composition. 

 Ejgs plain greenish blue (very rarelj- with a few small 

 specks of brown). 

 /'. Above light tawny brown; chest creamy buff, with nar- 

 row markings of brown, scarcely darker than upper 

 parts; length 6.45-7.75, wing 3.75-4.15 (3.00), tail 

 2.70-3.30 (2.96), culmen .52-.Gb (.55), tarsus 1.05-1.25 

 (1.15). Eggs .85 X -67. Hab. Eastern United States 

 and British Provinces, breeding from about 40° north 

 to Manitoba, Ontario, Anticosti, aiul Xewfoundlaiul. 



756. T. fuscescens Stepii. Wilson's Thrush. 

 /'. Above russet-olive ; chest very pale buflp, with broader 



markings of darker brown ; length about 6.90-7.90, 

 wing 3.80-4.25 (4.02), tail 2.95-3.40 (3.20), culmen .55- 

 .60 (.57), tarsus 1.15-1.28 (1.17). Eggs .85 X -66. Hab. 

 Eockj- Mountains, east, casually (?), during migrations, 



to Minnesota, Illinois, etc 756rt, T. fuscescens 



salicicolus (ItiDow.). Willow Thrush. 



e'. Above olive-brown or grayish olive, the sides of the head 



nearly uniform grayish ; chest pale buffj^ (sometimes 



nearlj' white), marked with large triangular spots of 



dusky. JS^est in low bushes or on ground, composed of 



mosses, etc., bulky and compact. Eggs greenish blue, 



spotted with rustj- brown. 



/'. Length about 7.00-7.75, wing 3.75^.40 (4.07), tail 2.05- 



3.40 (3.09), culmen .45-.58 (.5.5), tarsus 1.12-1.30 (1.18). 



Eggs .92 X -67. Ilab. Northern North America cast 



of Rocky Mountains, breeding from Labrador and 



■west side of Hudson's Bay north to Arctic coast and 



coast of Bering's Sea; in winter. Middle America, 



south to Costa Rica ; eastern Siberia. 



757. T. aliciae Bairp. Gray-cheeked Thrush. 



