248 DAVENPORT ACADEMY OF SCIENCES. 



phia. This bird was described and named b}' B. A. Hoopes, Esq." 

 Ma}^ 14, 1895, I took a set of two eggs, advanced in incubation, 

 together with female parent, in Winnebago county. The bird 

 was identified by Robert Ridgway and is now in the Smithsonian 

 Institution (Accession 30869). The nest and eggs did not differ 

 materially from those of the common Red-tail. May 2, 1896, took 

 three slightl}- incubated eggs in Hancock county; nest in a burr- 

 oak, 65 feet from the ground, composed of sticks and one corn- 

 stalk, lined with strips of stringy bark. The nest also contained 

 a number of White Poplar twigs with young green leaves. April 

 27, 1897, three eggs, slightly incubated; May i, 1897, three eggs, 

 slightly incubated, female bird shot (Hancock county). 



County records: Kosstith — "common; breeds" (Bingaman). 

 Hardin — "this ill-defined variety not rare in Hardin county, 

 where the type is specially abundant" (Peck). L,ee — "rare resi- 

 dent; breeds" (Praeger). Linn — "rare summer resident" (Berry). 

 Warren — "tolerably common resident" (Jeffrey). Webster — 

 "rare" (Somes). Winnebago — "summer resident" (Halvorsen). 



144. (337b). Ihtico borcalis calunis (Cass.). Western Red-tail. 

 The typical Western Red-tail is chocolate-brown or darker, 



quite unicolor, with rich red tail crossed by several black bars; 

 from which phase it grades insensiblj' into the ordinary borcalis 

 type. Kumlien and Hollister report it as of " rare but regular 

 occurrence in Wisconsin in the late fall" (Bds. of Wis., 1903, 

 63). In Nebraska, "during migrations, straggling over entire 

 state . . . Omaha, etc." (Rev. Bds. Neb., 1904). 



A male in the Coe College collection, taken at Cedar Rapids 

 in 1902, was pronounced by Prof. Charles R. Keyes to be darker 

 than many specimens he had observed in California. 



County records: Linn — "summer resident; nests" (Bailey). 

 Polk^" rare summer resident ; nests. Have found but one nest 

 in Iowa. That was in a quite large piece of timber southeast of 

 here near the Des Moines River ; shot one of the birds. This 

 was about 1898" (Johnson). Van Buren — " rare fall migrant" 

 (Savage). B. H. Wilson records a specimen from Rock Island, 111. 



145. (338). Rutco borealis harlaui (Aud.). Harlan Hawk. 

 The Harlan Hawk or Black Hawk is a .soot}- or black phase 



of the borcalis group, of which krideri represents the opposite 



