234 KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 
Underparts, blue; general plumage, blue; wings 
and tail, black, edged with blue. 
Indigo Bird. 
Indigo Bunting. 
Passerina cyanca (male). 
See No. 446. 
Underparts, more or less blotched with blue. 
Indigo Bird. 
Passerina cyanea (immature ). 
See No. 446. 
Part 2. The following species have the underparts not marked with 
red, blue, yellow, or green; breast, distinctly streaked; carpal joint (bend 
of wing), edged with yellow :— 
Breast and flanks, tawny; a tawny stripe over the eye; outer tail feathers, 
decidedly shorter than middle ones. 
Sharp-tailed Sparrow. 
Ammodramus caudactus, and varieties. 
See No. 414. 
Breast, white, heavily streaked with black; back, black, the feathers 
edged with olive and gray; outer tail feathers, shortest. Occurs only in 
Florida. 
Dusky Seaside Sparrow. 
Ammodramus nigrescens. 
See No. 419. 
