Birds of Floyd County, Iowa 137 



70. Circus hudsonius — Marsh Hawk. Messrs. Webster and Wal- 

 ler state that this species was formerly quite common. It is hardly 

 common at present, though this spring this species seems more 

 plentiful than usual. My first observation in 1916 is March 25th. 



71. Accipiter velox — Sharp-shinned Hawk. This species is 

 fairly common, being commonly called " pigeon hawk." I have 

 located several old nests, but none in use. 



72. Accipiter cooperi — Cooper's Hawk. This hawk is more com- 

 mon than the preceding species. Its nests are not uncommon 

 though as with A. velox I have found none in use. 



73. Buteo borealis borealis — Red-tailed Hawk. This species 

 might be safely termed uncommon. There are few nesting records 

 within the county in recent years, and none, I think, within the 

 last five. 



74. Buteo lineatus lineatus — Red-shouldered Hawk. This hawk 

 is considerably more common than the preceding species. It nests 

 to quite an extent in the county, although killed indiscriminately. 



75. Buteo platypterus — Broad-winged Hawk. This species is 

 fairly common, and nests within the county to a considerable ex- 

 tent. A pair nested within the limits of Charles City in 1913. 



76. Archibibteo lagopus sancti-j ohannis — Rough-legged Hawk. 

 Webster mentions this species as occurring in Floyd county, but 

 gives no exact dates. 



77. Haliaetus leucocepTialus leucocephalus — Bald Eagle. This 

 species, according to Webster was not very rare in 1897; now 

 probably extinct in the county. Mrs. F. May Tiittle reports one 

 near Osage, March 26th, 1914. 



78. Aquila chrysaetos — Golden Eagle. An uncommon winter 

 resident. Specimens were taken near Charles City, November 

 18th, 1914, and Nova Springs, November 5th, 1915. I have no data 

 for 1916. 



79. Falco mexicamis — Prairie Falcon. Rare. E. G. Brown took 

 a specimen near Charles City September 19th, 1914. Its diet 

 seemed to have been largely garter snakes, as the stomach con- 

 tents showed four of these, and one caterpillar. 



80. Falco columbarius columbarius — Pigeon Hawk. This falcon 

 is noted as an occasional migrant. My last observation is Sep- 

 tember 5th, 1913. A questionable nest record was given me for 

 1915. 



81. Falco sparverius — Sparrow Hawk. Fairly common, nesting 

 regularly within the county. It is seldom recognized as a hawk, 

 so escapes persecution. My first date for 1916 is March 27th. 



82. Pandion haliaetus carolinensis — Osprey. This species is 



