252 DAVENPORT ACADEMY OF SCIENCES. 



The two species of Rough -legged Hawks are characterized 

 from the other Hawks by the tarsi being feathered to the toes. 

 The American Rough-legged Hawk is a large dusky-colored 

 Hawk which occurs quite commonlj- in all sections of the state 

 as a winter resident, arriving in October or November and depart- 

 ing in March. Reported by most observers. 



"Of 49 stomachs examined, 40 contained mice; 5, other mam- 

 mals; I, lizard; i, insects; and four were empty" (Fisher). 



This species varies much in coloration, from dark brown or 

 blackish to specimens tinged with much rufous or ochraceous, 

 which latter approach to A.fcrriigineus, but are distinguishable 

 by a smaller bill and narrower gape. 



151- (347^)- Archibhfca fcynigincus (L,icht.). Ferrugineous 

 Rough-leg. 



The Ferrugineous Rough-leg occurs occasionally in Iowa dur- 

 ing the migrations. It is a bird of the western United States, 

 occasionally straggling east to Iowa or even to Illinois and Wis- 

 consin. Major Bendire states (Life Hist, of N. A. Birds, 259-60) 

 that it "has been reported as nesting near Grinnell, but the rec- 

 ord has not been fully verified." Mr. L,ynds Jones says of this: 

 "I know nothing about the Ferruginous Rough-leg at Grinnell. 

 Bendire concluded that the Grinnell bird must be Ferruginous, 

 and so stated upon his own motion. I alwaj-s questioned it." In 

 Nebraska it is "the common Rough-legged Hawk in the state, 

 and occurs throughout. It is less common in the eastern por- 

 tion" (Rev. Bds. Neb., 1904, 52). 



County records: Blackhawk — "rare winter vi.sitant; specimen 

 in museum of I. S. N. S." (Walters). Kossuth — "a few seen. I 

 am sure of identity of this species, as it is well known to me" 

 (Bingaman). lyinn — "a pair of Ferruginous Rough-legs winter 

 every year at Gordon's grove, W^aubeck; have .seen them there 

 four different 3'ears. They are larger birds than the Swainson, 

 but are white or nearly so below, with feathered legs. Mr. J. W. 

 Preston collected a set of Ferruginous Rough-leg near Newton" 

 (Berry). Pottawattamie — "straggler" (Trostler). Woodbury — 

 "rare; it is not uncommon in the various mounted Hawks .seen 

 in the stores of Sioux City. I have never handled a fresh speci- 

 men" (Rich). 



