lo) 
iLike 
Hake 
13. 
13. 
15. 
15. 
17, 
17. 
17. 
19. 
49 
6. Tail deeply forked; above glossy bluish black, the head, rump, 
and under parts white..................Swallow-tailed Kite. 
6. Tail but slightly if at all forked. . Mae Ne ACE) 
. Wing 7 or more times as long as tarsus; bill aoe no Waliten feast or ee otdhee’ 
nostrils elongated and without inner bony tubercle... .-......... (8) 
Wing 7 times as long as the tarsus; bill with a sharp notch and tooth back 
of tip; nostril circular and with an inner bony tubercle... .. ..(9) 
. Wing 6 or less times as long as tarsus... .. . cde (10) 
8. Tail white without bars and square Cuenca Di biee eaied Kite. 
8. Slaty blue above, gray below; tail black, imatveerree 
eMiescsaat Kite. 
. Tarsus araly a all fcathercd aa re of esd Bleek . Duck Hawk. 
. Tarsus feathered less than half way down in front.... .. peice Falcon. 
Tarsus feathered over half way down in front and on sides. .. . . 
shen ue KGear eeaaiene: 
10. piper aa aor Sane baile gray eGeale). ferruginous (female) ; 
barred with blackish.......:.. bet .Marsh Hawk. 
10. With neither the ee | plumage bine nor tnd upper tail-coverts 
: a OWES Eoeimca se Hee - plas) 
Nostril eaten and ee a conspicuous Peederl pares Galiercle: upper 
mandible with a strong tooth and notch back of hooked tip... . . (12) 
Nostril oval and the upper mandible without more than one Jobe or 
tooth, and that weak. . ape Bese SA@LG) 
12. Wing 11 to 17 inches fone Gaia one primary Pentcnedie on inner 
web..............Duck Hawk, Prairie Falcon, Gray Gyrfalcon. 
12. Wing 5 i vals inches long; two ainaaties MORCMEH Aree 2h Che) 
Back bluish slate-color, or blackish and without bright rufous... ....(14) 
Back or belly with more or less of bright brownish red.............(15) 
14. Above slaty blue; middle tail feather with not more than four 
black bands. . ...;. .Pigeon Hawk. 
14. Similar to ene Tur alee ate eal, Ress crossed by 
six light bars, counting the terminal one..... Richardson Merlin. 
Tail with one black bar; male spotted below; whole back barred; 
female tail with numerous black bars; below streaked.Sparrow Hawk. 
Similar to preceding, but slightly larger and appreciably paler, black 
bars and streaks narrower: . 20.2... 0.02... ) Desert ea Hawk. 
liGaailaboun pias: lonpiastwingeathle alee arkle sheer Sealy) 
16. Tail not over 3? aslong as wing... ........ ae (19) 
Wing under 9 inches long; the tail square........ ‘Sharp- Sehianed Hawk. 
Wing 9 to 1] inches long; the tail rounded... ......... sritgese Hawk. 
Wing 114 to 143 inches long... ..'.. 27s EES) 
18. Above bluish slate- eaine crown oder: a etieele ae over eye 
to the nape; below wages marked with gray and white. 
. American Goshawk. 
18. Bese toe pienne ats, Sees on banger parts heavier and 
CUTER ere hy sence d crys he eis uhes atte Mtg RTS Magee Western Goshawk. 
Outer web of primaries with white buffy or reddish spots; four outer 
