42 THE RAPTORIAL BIRDS OP IOWA 



wavy gray bars. Tail rather long with four dusky bands. 

 Immature : Above dusky grayish with buff edging on feath- 

 ers. Below whitish with blackish stripes. Seen late in 

 fall, winter and early spring. Goshawk. No. 7. 



Length 20 to 23 inches. Tarsus feathered to base of toes. 

 Under parts heavily marked, tending to form a band across 

 belly. Basal part of tail white or buffy. Rough-legged 

 Hawk. No. 14. 



Plumage more or less blackish all over. Primaries and 

 tail barred. Dark phase of Rough-legged Hawk. No. 14. 



Length 17.50 to 22 inches. Conspicuous reddish shoulder 



patches. Banded tail. Red-shouldered Hawk. No. 10. 

 3. Size medium. 



Length 19.50 to 22 inches. Like a big swallow, tail deeply 



forked. Body and head white. Wings and tail blackish. 



Swallow-tailed Kite. No. 2. 

 Length 19.50 to 22 inches. Slender, long-tailed Hawk with 



white patch on rump in any plumage. Nests on ground 



near marshes. Marsh Hawk. No. 4. 



Length 14 to 20 inches. Tail rounded at tip. Bluish gray 

 above. Below whitish with many dusky or rufous bars on 

 sides and breast. Immature : Dusky above with light spots 

 and rusty edges on feathers. Below streaked with brown 

 or dusky. Tail barred with dark bands. Cooper's Hawk. 

 No. 6. 



Length 13 to 18 inches. Adult: Dusky brown above, below 

 brownish or dull rusty with many or few transverse white 

 spots. Dark tail with two to four lighter bands. Belly 

 white barred with rufous. Immature : Whitish below with 

 streaks of brown or dusky bands on tail narrow, five to 

 seven. Broad-winged Hawk. No. 12. 



Length 16 to 19 inches. Adult: Upper parts slaty blue, pri- 

 maries barred with ochraceous. Under parts cream buff 

 with spots and bars of black save on breast. Immature: 

 Upper parts dusky with yellowish or rusty edges to feath- 

 ers, conspicuous black spot below eye. Duck Hawk. No. 19. 



4. Size small, length under 16 inches. 



Length 13 to 15.50 inches. Tail square at tip. Blue gray or 

 lead color, lighter on head and darker on wings and tail. 



