98 
11. Inner web of outer tail feather with a distinct white spot (12) —without 
a white spot. . Sos. eee JY Dern eee . .(33) 
2 Plain: ape a wtiite eae a G eSaal witb median crown- 
stripe. Et ion .Black and White Warbler. 
12. Not ae bidok ay eesti or if so, crown ease: black or dark (13) 
13. Rump yellow (14)—not yellow....... ee Ghrp 
14. White on tail in middle, extending Sears over a bat anda 
pair of feathers, |... 2... . Sete .Magnolia Warbler. 
14. White on tail near tip, or apreer occupying shee of feathers... .(15) 
15. Crown black, cheeks chestnut; below yellow, streaked with WIRE in 
BOW ace Oe Ni ee ean learn eae iat oy are Cape May Warbler. 
15. Crown and sides of breast more or less yellow; cheeks black or dark blue 
16. Throat white—Myrtle Wurhler“sycliawens Parareneal Warhlen! 
17. Wing with a white patch at base of primaries; ales bluish above and 
white below, with cheeks, sides and throat black; female, olive above, 
yellowish below. 4a ..........Black-throated Blue Warbler. 
17. Wing without a aeke a aah eres A orgs Peete .(18) 
18. Throat and chest black or Bae binek (19) ietiont black (20) 
19, Cheeks mostly blackish.......>....: .Townsend Warbler. 
19. Cheeks mostly yellow ........... “Binck throated Green Warbler. 
20. Wings with two distinct heme somecuhes joined to form a patch 
20. Wings not banded or with but one band ............. Wao) 
Ai. Wipper partsmot erayish) pluie. 5.2.2 ees. ae See . (22) 
2. Upper parts lisht srayish blue sec. ac. OGeeaied Warbler, Beale 
22. A light line over eye (23)—no hight Tee over eye... oe se eo) 
23. Throat white or yellowish white, no yellow on sides of head; above pale 
greenish blue........ Aes .Cerulean Warkies female. 
23. Throat yellow, orange, or bute, or Pelee Sass HE head mostly yellow. . . (24) 
24. Back plain slate-gray in adult, grayish brown in young; cheeks 
and forehead black. v.15 kee Said Leases Sycamore Warbler. 
24. Back neither gray nor plain grayish brown................(25) 
25. Back in male black and throat orange; in female streaked, throat yel- 
lowish ws. i. 3 eet oboe te 8 ok ee hae ts 62 oe DLC RD ERR Neen 
25. Back olive-green; throat wholly yellow....Townsend Warbler, young— 
throat not wholly yellow....... Black-throated Green Warbler, young. 
26. Back more or less streaked (27)—plain olivaceous; below greenish 
yell Gime Neate en tee Se erect cate tree gale Pine Warbler. 
27. Sides of crown or space behind eye, black. ........./........2...(80) 
97). Sides, of) Grows notebilac keer teten  nsren-urenoies coe ae eee ee (28) 
28. Under tail-coverts white......... .. (29) 
28. Under tail-coverts buff..... ebay breanicd Warbler, young. 
29. Sides of head, sides, and flanks iecneniead: gray. 
MG ueciueieided Warblers young. 
29. Sides ‘af eeal andes etl anaes olive’ or iad Tia he Uae Ree ener eet 
..Black-poll Warbler, young. 
