318), 
61. 
Ol. 
80 
Some distinct vellow on head and bend of wing (60)—no yellow 
ATV WILEL Cec 2 egestas 6 UR Ne a ster Sakae ne Rea een era eee a (63) 
60. Bend of wing yellow, but none on head (61)—head with yel- 
On wiekersk catvee (62) 
Back Beuitiied and harmed ais ert wehaaleeen with dedaya Aanis 
broadly streaked with rusty; tail feathers lightly barred with 
dusky. . ete Sige: . Cassin Sparrow. 
Back radiatinctly shrealeedt wih aah on a gray acleenceee these 
streaks rarely with dusky centers; flanks not streaked and tail 
feathers with no indication of bars............... Bachman Sparrow. 
62. Front of median Ce yellow; throat colored as chest 
. Golden-crowned Sparrow. 
Pees ores sellayy ae none on sieaian crown-stripe; a con- 
spicuously contrasting, square,white throat-patch.......... 
. .White-throated Sparrow. 
3. Crown See aoa Median Sane or ihe eines very broad and 
pure white, bordered with iblaek: "5,702. ee te (64) 
33. Crown rufous with a lighter but not white, narrow median stripe. . (66) 
64. With a median stripe (65)—without a median stripe, often 
Bolid lacks oft cite ste ewes Ate neeeanes aaa Harris Sparrow. 
65. Upper half of lores black or brown, cutting the white superciliary 
Stmipe.s.r os Bott .White-crowned Sparrow. 
65 Upper half of hee mee or Gay Aomerneots with the supercil- 
lary stripe. .2%).- Aer Re .Intermediate Sparrow. 
66. Lower parts Ton Fee die mealeede crown and back largely 
Chestnut .< i se ...........Swamp Sparrow. 
66. Lower porte comamenneele piredked Seat ig ae Sete eee (67) 
67. Breast finely marked with narrow sharp streaks not tending to form 
67. 
69. 
a central spot and crossed by a broad cream buff band...... 
Lincoln Sparrow. 
Beene ier ea ily Gearhead! eee prea fom or tending to 
form-s..central spot, no-bufl band <i 87 72h ira: a. ete ae (68) 
68. Larger; tail generally over 12 inches long, and bill slenderer, 
less than 4 inch deep at base.......... Mountain Song Sparrow. 
68. Smaller; tail generally under 12 inches, and bill about 3 inch 
deep at- base’: oF 25 ete eeu hla oo en me (69) 
Upper parts paler, more gray, with very little or no rusty; super- 
ciliary stripe and sides of neck whitish; lower parts averaging 
less spotted . ee tna: .Dakota Song Sparrow. 
. Upper parts qaaeer ithe a conspicuous Agence of rusty; sup- 
erciliary stripe and sides of neck olive-grayish; lower parts 
averaging’ more spotiedst, ist as ee ee eee eee Song Sparrow. 
70. Lower parts not distinctly streaked (71)—distinctly streaked(84) 
. Edge of wing pure white (72)—yellow or yellowish................ (81) 
72. Upper tail-coverts eae half of tail; a white wing-bar; 
male with throat black . ari i, Me GS) 
72. Upper tail-coverts covering NES pean half a ei PR ee Pte: (74) 
