BVTEO. 231' 



crossed near end by a more or less distinct subtcr- 

 niinal band, and tipped -with whitish ; upper parts 

 chietly (sometimes entirelj-) dark sooty brown or 

 bhickish (varying to dceji bhick) ; lower parts 

 varying from <iiitirely deep sootj' brown or black 

 to pure white, t)ut, if the latter, always more or 

 less streaked and spotted, especially across belly 

 aud on sides of breast, with dusky. Young : Tail 

 banded with grayish brown and dusky, the two 

 colors of about equal extent ; otherwise, much like 

 adult. Male: Length 20.00-21.00, wing, 14.25- 

 16.10, tail 8.80-10.00, culmen, .98-1.00, tarsus 

 2.75-3.50, middle toe 1.50-1.70. Fe-niale : Length 

 22.00-23.50, wing 15.75-16.50, tail 9.10-10.00, cul- 

 men .98-1.10, tarsus 2.85-3.50, middle toe 1.60-1.80. 

 Hah. Gulf States and lower Mississippi Valley, 

 north, casually, to Kansas, Iowa, Illinois, and 

 Pennsylvania, east to Georgia. 



338. B. borealis harlani (.Vud.). 

 Harlan's Hawk. 

 Feathers of head and neck more or less distinctly 

 edged with ochraceous or rusty. Adult: Tail 

 rufous, paler at tip, usually crossed near end by 

 a narrow band or bar of blackish (rarely with 

 more or less distinct narrow bauds, or indications 

 of bands, anterior to the subterrainal band) ; upper 

 parts chiefly or entirely dusky grayish brown, 

 sometimes irregularly broken by admixture of 

 whitish aud brownish gray ; lower parts varying 

 from entirely pure white (usually with dusky 

 streaks across bellj-) to wholly sooty blackish, 

 with or without rusty on breast. Young: Tail 

 graj'ish brown, varying to dull ochraceous, crossed 

 by inne or ten well-defined narrow bauds of 

 blackish ; otherwise much like adult, but usually 

 with much less of tawny or ochraceous. Male: 

 Length about 19.00-22.50, extent of wings 49.00- 

 53.00, wing 13.50-10.50, tail 8.50-10.00, culmen 

 .95-1.03, tarsus 2.40-3.20, middle toe 1.60-1.70, 

 weight 2-3 pounds. Female: Length 23.00-25.00, 

 extent 54.00-57.50, wing 15.25-17.75, tail 9.50- 

 10.50, culmen 1.00-1.15, tarsus 3.15-3.40, middle 

 toe 1.60-1.70, weight 3-4 pounds. 2Cest usually in 

 tall trees. Eggs 2-4, 2.30, or more, X l.SO, or 



