FINCHES, SPARROWS, ETC. 373 



b. Head not the same color as the back. 

 ft 1 . A bright red crown-cap. 



b z . Rump and flanks always heavily streaked with blackish. 



528. REDPOLL and races. 



b 3 . Rump white, generally without streaks; flanks lightly 

 streaked; more or less white in the feathers of the back. 



527. GREENLAND REDPOLL. 527a. HOARY REDPOLL. 

 c 1 . Crown-cap black 553. HARRIS'S SPARROW. Ad. 



B. Tail-feathers narrow and generally sharply pointed, the outer ones 



always much shorter than the middle pair. 

 a. Crown of a different color from the back, or a buffy line over the 



eye. 

 a 1 . Center of crown with a more or less distinct brownish or buffy 



line. 



a 2 . Nape dull, pale olive-green, of the same color as the line over 



the eye, but finely streaked with black; back rufous-brown, 



streaked with black .... 547. HENSLOW'S SPARROW. 



a 3 . Nape bright rufous-brown, the feathers bordered by gray; 



the feathers of the back black, bordered by buffy whitish. 



548. LECONTE'S SPARROW. 

 & 1 . Center of crown with a more or less distinct stripe of ashy blue. 



6 2 . Breast and sides distinctly streaked with black or black ish. 



549. SHARP-TAILED SPARROW. 



6 3 . Breast and sides buffy or brownish, the former generally 



without distinct black streaks. 



549a. NELSON'S SHARP-TAILED SPARROW. 



5496. ACADIAN SHARP-TAILED SPARROW. 



6. Crown of the same color as the back; no buffy line over the eye. 



a. A yellow spot before the eye and on the bend of wing. 



a 1 . Upperparts very dark brown or black; the feathers edged 



with olive-gray or ashy, breast generally with black streaks. 



(Florida.) . . 550a. SCOTT'S SEASIDE SPARROW and races. 



551. DUSKY SE ASIDE SPARROW. 



a 2 . Back olive-gray; breast with grayish brown streaks. 



550. SEASIDE SPARROW. 



b. No yellow before the eye. 

 fe 1 . Bend of wing yellow. 



575. PINE-WOODS SPARROW. 575a. BACHMAN'S SPARROW. 

 b 2 . A broad cream-buff band across the breast. 



583. LINCOLN'S SPARROW. 



fr 3 . No cream-buff band on the breast; streaks on the breast 

 tending to form a spot in its middle . 581. SONG SPARROW. 



2. Tail with white patches or base of tail yellow. 



A. Base of the tail yellow 533. PINE SISKIN. 



B. Outer tail-feathers with white patches. 



a. Hind toe-nail shorter than the bill from the nostril. 



a 1 . Lesser wing-coverts rufous; breast streaked with black. 



540. VESPER SPARROW. 

 a 2 . Sides of crown and ear-coverts chestnut; a black spot on the 



center of the breast 552. LARK SPARROW. 



6. Hind toe-nail longer than bill from nostril. 



b 1 . Underparts cream-buff; two outer tail-feathers mostly white. 



537. SMITH'S LONGSPUR. 



6 2 . Underparts whitish ; breast streaked or spotted with black or 

 entirely black; second outer tail-feather with but little white. 



536. LAPLAND LONGSPUR. 



