Jan., 1909. Birds of Illinois and Wisconsin — Cory. 



711 



Olive -backed Thrush. 



(Birds N. E. 111., 1876, p. 93), 

 but this does not necessarily 

 indicate breeding. Injured or 

 non-breeding birds often re- 

 main during the summer far 

 south of their usual habitat. 



It is not known to breed in 

 northern Wisconsin, but it is 

 not unlikely that it does so. 

 The song is charming but not 

 as fine or as varied as that of 

 the Wood Thrush, which it 

 somewhat resembles. 



Alma's Thrush, Hylocichla ustulata almcs Bishop, recorded from 

 Wisconsin (Kumlien and Hollister, Birds of Wisconsin, 1903, p. 127) 

 is apparently inseparable from H. u. swainsonii. 



363. Hylocichla guttata pallasii (Cab.). 

 Hermit Thrush. 

 Turdus aonalaschkcs pallasii (Cab.), A. O. U. Check List, 1895 



P- 319- 



Distr.: Eastern North America, breeding from Massachusetts, 

 mountains of Pennsylvania, southern Ontario, and northern Michi- 

 gan (Mackinac Island) northward to Labrador, Manitoba, Atha- 

 baska, and the Mackenzie region; winters from Illinois (about lat- 

 itude 40°) to the Gulf coast; accidental in Greenland, Bermuda, and 

 Europe. 



Adult: Upper parts, brownish olive, or dark olive brown, shading 

 into rufous brown on tail coverts and tail, in decided contrast to color 



of the back; throat and breast 

 faintly tinged with buff; breast 

 and sides of throat rather heavily 

 marked with blackish arrow-shaped 

 spots ; belly, white ; sides washed 

 with pale grayish olive. The dif- 

 ference in color of tail and back 

 is a good distinguishing character. 

 Sexes similar. 



Length, 7.10; wing, 3.65; tail. 

 2.85; bill, .50. 



This species is common in lUi- 



