43. 
45. 
47. 
49. 
49. 
51. 
53. 
55. 
55. 
57. 
19 
Not pure black and white.......... an (44) 
44. Throat distinctly Beale: aaeet e celainl ie Canyon Towhee. 
44. Throat never streaked: tale with much blue, female brown: 
ish above, light below......... ease tl eae CO) 
. Larger, with wing over 3 inches vai conspicuous ‘heen wing- 
Pamdsr uot. ie ee . Western Blue Grosbeak. 
Smaller, wing under 3 patient no anon wing- aides dg det nes (LD) 
46. Wing with two mnie wing-bars; male head end feel blue, 
belly white; female brown above, white below. . Lazuli Bunting. 
46. Wing aaah White bars: 5),... “me ..(47) 
Wholly bright blue—Indigo Bundines fale anaes pete a bine. . (48) 
48. Throat red (49)—throat not red. aaa tt 0) 
Under parts vermillion, back green, rump ae (Pere Burgas. male. 
Under parts purple, Baek red, rump blue........Varied Bunting, male. 
50. Under parts whitish (51)—under reiate yellowish. . Aa See 
bene .Painted Bunting, female. 
Chest ceees Stier Pout: ite innliestau set not streaked. 
& YORE ets ats ee een an an Oe eee are _ Varied Bunting, female. 
-52. Outer pair of tail feathers Mecidealy shorter than the 
middle pair, making the tail plainly rounded............. (53) 
52. Outer pair of tail feathers not decidedly shorter than 
middle pair, making the tail even or double rounded. .... . . (70) 
Outer tail feathers with a broad white tip (54)—-without white...... (55) 
54. Upper parts darker, with the streaks comparatively broad, 
the chestnut markings on head darker and more extensive 
black streaking through and below eye........... Lark Sparrow. 
54. Upper parts paler,with much narrower and sharper streaks, 
the chestnut on head paler, and black more restricted. 
Sd Voie ee REE ‘Western Lark Sparrow. 
Tail feathers very narrow, oy fare eee aaa stiff; marsh spar- 
TOW Stare atic ety or ee tatteh seins ane, Gh Oy SEIT ae A alte oh eR ETE! tne Sree eae (56) 
Tail feathers either broad or narrow, but tips bluntly rounded and 
LNCOR SULLN Re aM Pee Ren PT RE aie Toi eh het Oe ea Sem Eee em Spee cue Ee ke (59) 
56. Crown with an indistinct bluish median stripe; back without 
ebestnuts feet darks ih pee Sn Pee ae Nelson Sparrow. 
56. Crown witha distinct brownish or buffy median stripe; back 
marked with chestnut; feet palelye. iis aks Pane t) CRB E) 
. Tail as long as wing; edge of wing white; nape bright rufous 
streaked with black; stripe over eye bright buffy.......... 
So 5b Ace ORCS RE REE oe ta CAO RT eae . Leconte Sparrow. 
Tail shorter than wing; edge of wing pale yellow; nape pale 
olive green streaked with black; stripe over eve olive...........(58) 
58. Darker above, with chestnut of back darker and more ex- 
tensive; under parts more buffy.............Henslow Sparrow. 
58. Palerabove,with chestnut of back paler and more restricted ; 
UNGER parts Waiter. .°.)./2)5 60. es Western Henslow Sparrow. 
