51 



elsewhere. Frequently seen in winter. An earlier and more general 

 breeder than the Sharp-shinned. 



334. Accipiter atricapillus (Wilson) — American Goshawk. 



A regular, but not common, winter visitant. Observed at Omaha, 

 Lincoln, Rockport, Norfolk, and in Sioux county. 



[334a. Accipiter atricapillus striatulus Ridgway — Western Goshawk. 



This western variety of the preceding species has been reported 

 once from Florence, in 1896, by L. Skow, and again from Ken- 

 nedy., Oct. 1896, by J. M. Bates. Very dark 'colored goshawks are 

 occasionally to be met with in the state, especially westward, which 

 may be the wesern variety.] 



337. *Buteo borealis (Gmelin) — Red-tailed Hawk. 



The typical Red-tailed Hawk is confined to the eastern half of the 

 state where it is found in the timber belts along all the larger water- 

 courses. It is partially migratory, but some remain throughout 

 winter. Breeds over entire range and feeds chiefly on rabbits, ground 

 squirrels, etc. 



337a. *Buteo borealis kriderii Hoopes — Keideb Hawk. 



Found chiefly westward but spreading to eastern part of state 

 during migrations; breeds in Sioux and Dawes counties — sometimes, 

 at least, on ledges of the canyon walls. 



337b. Buteo borealis calurus (Cassin) — Western Red-tail. 



During migrations straggling over the entire state. Breeds com- 

 monly in both Colorado and Wyoming, and may breed also in western 

 Nebraska. West Point, Omaha, and Lincoln. 



337d. Buteoborealis harlani (Audubon) — Harlan Hawk. 



Casually over eastern third of the state, but not known to breed. 

 West Point, Omaha, Lincoln. There is a specimen in the collection 

 of August Eiche taken at the latter locality. 



339. *Buteo lineatus (Gmelin) — Red-shouldered Hawk. 



A not uncommon hawk in the eastern part of the state, where it 

 breeds most abundant along the Missouri river bluffs. Omaha, Belle- 

 vue, Nebraska City, Rulo, Lincoln, Neligh. 



342. *Buteo swainsoni Bonaparte — Swainson Hawk. 



A very common hawk over the entire state; in fall sometimes gather- 

 ing in large flocks during migrations ; nesting throughout the Nebraska 

 range eastward in trees, westward frequently on the ground. Oc- 

 curring in several color variations. 



343. *Buteo platypterus (Vieillot) — Broad-winged Hawk. 



A regular and rather common summer visitant and breeder along 

 the Missouri river and its tributaries in the eastern part of the state; 

 rare in the interior, and a straggler in western Nebraska. Observed 

 once at Harrison, Sioux county, by Bruner; at Long Pine by Bates, 

 and at Neligh by Cary — numerous records farther east. 



