Hawks 



335. Harris Hawk (Tarabuteo unicinctus harrisi] 

 L. cf, 19; 9,22. Longer upper tail-coverts, base and 

 tip of tail white. Ads. Shoulders, thighs and under 

 wing-coverts, reddish brown; under tail-coverts white. 

 Yng. Similar but streaked below with rusty, buff and 

 black; legs barred with white. Notes. A long, harsh, 

 Buteo-like scream. (V. Bailey.) 



Range. Middle America from Panama north to southern Texas, 

 rarely Mississippi and southern California. 



337. Red-tailed Hawk (Buteo lorealis). L. tf, 20; 

 $,23. Four outer primaries notched. Ads. Tail 

 rusty brown with a black band, sometimes broken, 

 near its tip; below buffy white, a band of spots across 

 the belly; legs usually without bars. Yng. Tail gray- 

 ish brown with a rusty tinge and numerous blackish 

 bars; upper tail-coverts barred black and white; below 

 less buffy than in adult; legs more often barred. Notes. 

 A shrill whistle, suggesting the sound of escaping 

 steam. 



Range. Eastern North America, west to the Great Plains, north to 

 about latitude 60 ; breeds throughout its range; winters from Mass- 

 achusetts, Illinois and South Dakota southward. 



337a. KriderHawk (B. b. kriderii). Similar to 

 No. 337, but nearly or wholly white below. Ads. 

 Usually without black tail band. 



Range. "Great Plains of United States from Minnesota to Texas; 

 east irregularly or casually to Iowa and northern Illinois." (Bendire). 



337b. Western Red-tail (B. b. calurus). Very 

 variable in color. Ads. Sometimes sooty brown 

 above and below with more or less rusty; in light phase 

 resembles No. 337, but tail averages paler and some- 

 times has more than one bar; the underparts are deeper 

 and legs are usually barred with rusty. Yng. Similar 

 to Yng. of No. 337, but markings below heavier; 

 flanks more barred. 



Range. Western North America from Rocky Mountains to Pacific; 

 north to British Columbia, south to central America; generally resi- 

 dent. 



337d. Harlan Hawk (B. b. Variant). Ads. Above 

 sooty brown; tail closely mottled with blackish, rusty 

 and whitish; below varying from white, more or less, 

 spotted on belly to sooty brown. Yng. Similar, but 

 tail barred with blackish, gray, rusty or whitish. 



Range. "Gulf States and Lower Mississippi Valley, north (cas- 

 ually) to Kansas, Iowa, Illinois and Pennsylvania; east to Georgia 

 and Florida." (Bendire). 



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