LAND BIRDS. 463 
AA. Smaller, wing 2.75 or less. K, KK. 
K. Streaked above and below. L, LL. 
L. Crown with a distinct median light stripe. M, MM. 
M. Smaller, wing barely 2 inches. Leconte’s Sparrow. 
No. 224. 
MM. Larger, wing always more than 2 inches. N, NN. 
N. Tail short, barely 2 inches. Henslow’s Sparrow. 
No. 223. 
NN. Tail long, 2.25 to 3 inches. O, OO. 
O. Chest white, broadly streaked and spotted with 
brown or blackish, usually with a central 
dark patch. Song Sparrow. No. 235. 
OO. Chest gray or buff with narrow or indistinct 
dark streaks and no central dark patch. 
P, PP: 
P. Chest gray or brownish gray with broad 
indistinct streaks. Swamp Sparrow. 
(young). No. 237. 
PP. Chest buff with distinct narrow streaks of 
blackish. Lincoln’s Sparrow. No. 236. 
LL. Crown without distinct median light stripe; tail feathers 
acute. Nelson’s Sparrow. No. 225. 
KK. Streaked above, but plain below. Q, QQ. 
Q. Bend of wing and spot above eye yellow, crown without chest- 
nut. Grasshopper Sparrow. No. 222. 
QQ. No yellow on bend of wing or above eye, forehead black, 
crown chestnut. Swamp Sparrow (adult). No. 237. 
Group 3. 
Closed tail square or nearly so. 
A. With more or less blue in plumage. Indigo Bird, male. No. 242. 
AA. Without blue. B, BB. 
B. With more or less bright yellow. C, CC. 
C. Only bend of wing and streak over eye yellow. Savanna 
Sparrow. No. 221. 
CC. Breast yellow. Black-throated Bunting. No. 243. 
BB. Without yellow. D, DD. 
D. Outer (lateral) tail-feathers largely white. KE, EE. 
E. Upper parts and breast slate-colored, not streaked, bill 
white or pink. Junco. No. 234. 
EE. Upper parts and breast streaked with light and dark, 
bill dusky. Vesper Sparrow. No. 220. 
DD. No white in the tail. F, FF. 
F. Upper parts distinctly streaked; wing more than 2.75 
inches. English Sparrow. No. 217. 
FF. Upper parts indistinctly or not at all streaked; wing 
less than 2.75 inches. Indigo Bird (female). No. 242. 
