Hawks. 



356. Duck Hawk (Falco peregrinus anatum). L. 

 cT, 16; 9, 19. Sides of throat black. Ads. Above 

 bluish slate; below buffy. Yng. Above blackish 

 margined with rusty; tail with broken rusty bars and 

 whitish tip; below deep rusty buff streaked with black- 

 ish; under surface of wing uniformly barred. Notes. 

 Loud screams and noisy cacklings. (Bendire.) 



Range. — Western Hemisphere; breeds locally from Southern States 

 to Arctic regions; winters from Northern States southward; more 

 common west of Rocky Mountains. 



356a. Pea le Falcon (F.p. pealei). Ads. Crown 

 uniform with back; chest heavily spotted with blackish; 

 bars of remaining underparts very broad. (Ridgw.) 



Range. — "Pacific coast region of North America from Oregon to the 

 Aleutian and Commander Islands, breeding throughout its ranee." 

 (A. O. U.) 



357. Pigeon Hawk {Falco columbarius). L. rj\ 

 Y0.5; ?, 13. Two outer primaries notched. Ad. tf. 

 Above slaty blue; middle tail feather with not more 

 than four black bands. Ad. 9 and Yng. Above dark 

 blackish brown; bars in middle tail feather five or less; 

 below more heavily barred than in <$. 



Range. — North America, east of Rocky Mountains: breeds chiefly 

 north of United States from Rocky Mountains and westward: breeds 

 from Colorado and California north to Alaska; winters from Gulf 

 States, Colorado and California, south to northern South America. 



357a. Black Merlin (F. c. suckleyi). Similar to No. 

 357, but much darker above and more heavily marked 

 below; bars on tail and under side of wing nearly ob- 

 solete. 



Range.— Pacific coast from northern California to Sitka; east to 

 eastern Oregon and Washington. 



358. Richardson Merlin {Falco richardsonii). Re- 

 sembles No. 357, but is paler and has the central tail 

 feather crossed by six light bars, counting the terminal 

 one. 



Range. — Interior of North America from eastern border of Grea* 

 Plains west; rare west of Rockies; north to,at least, latitude 53 ° ; south 

 to Mexico. 



359. Aplomado Falcon {Falco fusco-coerulescens) . 

 L. cf, 16; 9, 17.5. Middle of belly black. Ads. 

 Above slaty gray; breast buff, lower belly rusty. Yng. 

 Similar but grayish brown above, belly paler. 



Range. — South and Central America north to southern border of the 

 United States. 



360. Sparrow Hawk {Falco sparverius). L. 10; 

 l '9, 11. Ad. o 71 - Tail with one black bar; below 



spotted. Ad. 9- Whole back barred; tail with num- 

 erous black bars; below streaked. Notes. A rapidly re- 

 peated killv-killj'-killy, usually uttered while on the 

 wing. 



Range. — Eastern North America west to Rocky Mountains: breeds 

 from Gulf States to Hudson Bay; winters from southern Illinois and New 

 Jersey southward. 



137 



o£0. 

 female . 



