150 IOWA ACADEMY OF SCIENCE Vol. XXV, 191S 



65. Buteo lineatus Uneatus. Red-shouldered Hawk. On Oc- 

 tober 25, 1913, an immature bird of this species was secured irom 

 a dense patch of timber along Iowa river. It is the only record 

 of this hawk for the county. (Auk. Vol. XXXI, p. 255, April, 

 1914.) 



66. Buteo plat ypt ems. Broad-winged Hawk. A tolerably 

 common migrant from April 1 to May 22 and August 21 to 

 September 30, A single straggler was noted November 27, 1914. 

 More broad-AAangs are shot by gunners than anj- of the other 

 Buteos because of their habit of allowing a person to walk 

 within easy gunshot before taking wing. 



67. Ealiaeetus leucocephalus IcucocepJialus. Bald Eagle. Har- 

 old Merryman brought in an adult male bald eagle on ]\Iay 13, 

 1913. The bird had been killed with a twenty-two caliber rifle 

 the previous day. It was found in an open pasture six or seven 

 miles north of Marshalltown. 



£8. Falco columbarius colionharius. Pigeon Hawk. One 

 noted September 21, 1913, by Mr. Howard Graham and the 

 writer. We were looking at a flock of mourning doves sitting on 

 a telephone wire when our attention was drawn to a bird much 

 nearer to us. At first it was taken for another dove, but when 

 the glasses were turned on it, it proved to be a hawk of this 

 species. We walked slowly to within twenty feet of it and walked 

 all around it. The bird paid little attention to us but made a 

 dash at a mourning dove which flew by. It chased the dove 

 around a little willow thicket and then started after another one 

 which flew by, botli birds passing quickly out of siglit among 

 the trees. 



69. J^'alco sparveriiis sparverius. Sparrow Hawk. This was 

 the most common hawk of the county. It was a common spring 

 migrant and uncommon summer resident from INIarch 15 to Octo- 

 ber 12, It was found in the greatest numbers in March. April 

 and September. An adult male was taken September 12. 1913. 



It was oecasionally noted during the summer and on July 13. 

 1915, an adult female Avas seen accompanied by a barely fledged 

 young bird. They were sitting on fence posts along a country 

 road north of All)ion. A nest was reported in 1914, but could 

 not be visited until it was too late. 



