81 



73. Crown grayish or olive — English Sparrow — chocolate brown 



European Tree Sparrow. 



74. Crown grayish, streaked with black in adult (75) 



74. Crown reddish, either wholly chestnut or speckled with 



rusty in adult (76) 



75. Crown with a distinct gray median stripe Clay-colored Sparrow. 



75. Crown streaked uniformly throughout, no trace of a median stripe. 



Brewer Sparrow. 



76. Breast with a dusky central spot; two wing-bands; lower 



mandible yellow (77) 



76. Breast without a spot (78) 



77. Darker; the black streaks on back broader, with a considerable 

 amount of rusty, especially on scapulars; crown chestnut, me- 

 dian stripe but poorly defined; outer webs of tertials darker, 

 more chestnut; edgings to tail feathers narrower, grayish; 



smaller, wing averaging under 2f inches Tree Sparrow. 



77. Paler; the black streaks on back narrower, with very little rusty; 

 crown cinnamon, median stripe generally well defined, gray- 

 ish; outer web of tertials paler, more buffy; edgings to tail 

 feathers broader, almost white, larger, wing averaging over 2f 



inches : . Western Tree Sparrow. 



78. A black line through eye; crown bright chestnut in adult 



(young with crown brownish and breast streaked) (79) , 



78. No black line through eye; crown. rusty (80) 



79. Darker; ground color of back dark brown or rusty, crown darker 

 chestnut, rump and sides of head mouse gray, black stripe behind 



eye broader; smaller, wing averaging under 2J inches 



Chipping Sparrow. 



79. Paler; ground color of back pale brown without rusty, crown paler 

 chestnut, rump and sides of head paler gray, black stripe behind 



eye narrower; larger, wing averaging over 2| inches 



Western Chipping Sparrow. 



80. Upper parts more rusty, the crown bright rusty, rarely with 



an indication of a median stripe; back with much rusty 



and broader black streaks, under parts, especially the 



breast, more buffy; decidedly smaller, wing 2\ to 2| inches, 



tail 2 J to 2| inches in length Field Sparrow. 



80. Upper' parts grayer, the crown dull rusty, with a broad gray 

 median stripe, sometimes almost entirely gray; back mostly 

 grayish, with narrower black streaks; under parts paler, the 

 breast tinged with gray; decidedly larger, wing 2J to 2| 

 inches, tail 2$ to 2§ inches in length . . . .Western Field Sparrow. 

 81. Outer tail feather with some conspicuous white; a blackish dot on 



. breast Sage Sparrow. 



81 . Outer tail feather without white . . . . (82) 



82. Breast bright yellow; throat, except white chin, black. Dickcissel. 

 82. Breast without yellow; throat without black (83) 



