24 



Crown olive-green like back ; sides and under 



tail coverts yellow, White-eyed Vireo. 



No distinctive markings, Warbling Vireo. 



aaa. Back bright ashy-blue ; crown glossy black ; tree 



climber. White-breasted Nuthatch. 



B. Underparts not as above. 



a. Back, breast and sides (and often other parts) dis- 

 tinctly streaked with various shades of black, 

 brown and lighter colors, 

 b. Length scarcely 5 inches ; plumage with evident 

 yellow tinge. 



Tail feathers very acute ; secretive meadow bird, 

 in summer, Henslow's Sparrow. 



Tail feathers not acute ; active bird of trees and 

 shrubs ; in winter. Pine Finch. 



bb. Length more than 5 inches ; plumage without 

 decided yellow tinge, 

 c. Crown crimson ; face and throat blackish ; winter 

 visitor, Lesser Eed-poll. 



cc. No crimson ; summer residents, 

 d. Dark brown ; streaking thick ; bend of wing and 

 line over eye yellow, Savannah Sparrow. 



dd. Bright brown ; streaking not so thick ; no 

 yellow. 



Breast, though streaked, with a broad trans- 

 verse cream-buff band, Lincoln's Sparrow. 

 Breast with no such band but often with a 

 distinct central brown blotch, 



Song Sparrow. 



aa. Back, breast and sides not as above. 



b. General cast of plumage brown, palest beneath, 



everywhere waved or crossbarred with dusky ; 



small, active birds. 



Length about 5 inches ; no white ; summer 



resident. House Wren. 



