Bird Life of North Dakota 39 



and a number of others seen which were hard to identify as either species. 

 There are a number of mounted birds of both species in the WilHams Col- 

 lection. A fine specimen w^as also seen there, a partly all)ino male. 



119. Buteo borealis harlani (Audubon). Harlan's Hawk. 



Schmidt, 1904; central section as a migrant. Cameron, 1907, p. 262; one from 

 North Dakota, spring of 1890, now in British Museum. Saunders, 1921, p. 173; 

 this subspecies has been taken in North Dakota. 



Mr. Alfred Eastgate is responsible for two records for this hawk; one 

 taken at Stump Lake, October 2, 1902, and another at Dry I^ake, October 

 14, 1912. The only specimen seen was in the Williams Collection, a large 

 female collected at Grafton, May i, 1916, by Henry Williams. It is now 

 in the Museum of Zoology Collection. 



120. Buteo lincafus linedtus (Gmelin). Red-shouldered Hawk. 

 Schmidt, 1920, p. 298; summer resident. BendirE, 1892, p. 219; probably occurs 



in small numbers in the more heavily timbered parts of North Dakota. The species 

 was not seen in the field. 



121. Buteo swainsoni Bonaparte. Swainson's Hawk. 



Baird, 1858, pp. 21, 22; female taken at Heart River, North Dakota, September 

 21, 1856, and two females from the Little Missouri River, taken Septeinber 12, 1856, 

 by Dr. Hayden. These were published as Buteo bairdii Hay, which name was later 

 reduced to the synonymy of the present species. Allen, 1875, p. 64; more or less 

 common; obtained an adult male on Heart River, June 25, 1873. CouES, 1878, p. 624; 

 very abundant in North Dakota, where many specimens were taken from July 15 to 

 September 9, 1873. Bendire, 1892, p. 239; Capt. B. F. Goss says he found this speceis 

 breeding in North Dakota in the high timber along the streams from forty to fifty 

 feet up and in low brush patches on the prairie in the lake region, where its nests 

 were but two to four* feet from the ground. Reed, 1904, p. 162; set of| eggs collected 

 May 21, 1897, in Stark County, by Roy Dodd. Judd, 1917, p. 17; an abundant sum- 

 mer resident, nesting in small bushes and also in tall trees. In July they appear in 

 large numbers to feed on grasshoppers, gophers, mice, toads, etc. Writing in 1910, 

 one would say they were rare birds and not found nesting at all, nor is there a sum- 

 mer flight of this species. 



A male in the Museum of Zoology Collection was taken at Stump Lake, 

 May, 1897, by Alfred Eastgate. In the collection of Mr. Williams at Grafton 

 are a number of mounted birds, all in different plumages, some very dark 

 and others quite light. This species must have greatly decreased in num- 

 bers or has changed its habits. At present it is rarely found nesting and is 

 not seen in many localities where it was formerly abundant. It was first 

 seen at Cando, June 3, 192 1. when I secured one. In July and August I 

 saw a few others in the prairie regions, but they seemed no more common 

 than the red-tails. This is doubtless the most beneficial of the hawks in its 

 food habits and should not be destroyed. 



122. Buteo platypterus (Vieillot). Broad-winged Hawk. 



Judd, 1917, p. 17; fairly common straggler, no evidence of its breeding here has 

 been noticed. 



An adult female was taken August 23, 1900, at Devils Lake by Alfred 

 Eastgate, and is now in the Biological Station Museum. One was seen and 



