11 
BIBLIOGRAPHY 
List of Authorities That Have Been Referred to in the Preparation 
of this Paper 
Allison, Andrew . , , , . „ . , 
1904. “The Birds of West Baton Rouge Parish, Louisiana; Auk, XXI, p. 4^7. 
B. harlani observed by sight in March. 
Anderson, Rudolph Martin 
1907. “The Birds of Iowa;" Proc. Davenport Acad, of Sci., vol. XI, pp. 12o-417. 
Cites borealis as the common breeding form, krideri as being quite common 
and nesting, calurus as rarer with a few nesting records. A few harlani records 
but none breeding. 
Audubon, ^ Rich > d Harlan> Esq., M.D.; Bull. Nutt. Ornith. Club, V, 1880, 
pp. 202-203. . , 
Postcript announcing taking of a new hawk and proposing to name it 
“ harlanii .” 
1830. “Birds of America” (folio), Plate 86. 
Type of Buteo harlani figured. 
1839. “Birds of America” (octavo). _ 
Reprint of original description of Buteo harlani m Ornithological Bio- 
graphies 1831, pp. 441-443. 
Bailey Bert He ald 
1918. “The Raptorial Birds of Iowa;” Iowa Geol. Surv., Bull. No. 6. 
Status of different forms in Iowa. Accepts several breeding records of 
harlani for state, but gives no convincing confirmatory evidence. 
1916. “Krider’s Hawk in Alaska;” Auk, vol. XXXIII, p. 321. 
Description of juvenile winter specimen from Eagle, Alaska. 
Baird, S. F. „ , , „ „ . . . , , 
1854. U.S. P.R.R. Exp. and Surveys, 32nd Parallel, vol. X. Explorations near the 
Forty-first Parallel of North America, Report on Birds Collected. Plate 
XIV of Buteo calurus, probably type specimen, differs very slightly from 
plate in Baird, Cassin, and Lawrence, 1860. 
Baird, S. F., Brewer, T. M., and Ridgway, R. „ 
1874. “A History of North American Birds, Land Birds;” Little, Brown, and Co., 
Boston, vol. Ill, pp. 281-297. 
Discusses and describes all then known forms of species. 
Baird, Cassin, and Lawrence 
1860. ‘‘The Birds of North America,” vol. I (text) and Atlas. 
Descriptions and accounts of Buteo borealis, B. harlani, and B. calurus, 
coloured plate of Buteo calurus No. 14. Most of the plates in Baird 1854 are 
re-used here, but this is new, contains also Plate 16 of Buteo cooperi. 
Bendire, Capt. Charles . , 
1892 “Life Histories of North American Birds;” U.S. Nat. Mus. Special Bulletin 
No. 1, pp. 206-218. , , 
Occurrence of “black hawks” in winter in Florida referred to B. b. harlani, Out 
without any evidence of identity. 
Beyer, Allison, and Ivopman 
1908. “List of the Birds of Louisiana, Part V; Auk, Vol. XXV, pp. 441-42. 
Reports B. borealis common in winter, B. krideri rare in winter, B. harlani 
rather common in winter and with no evidence of breeding. 
Bishop, Louis B. . . , „ . „ TT « tv 1 
1900 “Birds of the Yukon River Region, with Notes on Other Species; U.S. Biol. 
Surv., Washington, N. A. Fauna No. 19. Refers all birds to calurus, breeding 
records* 
1913. Letter on A. O. U. Check-list, Third Edition, Auk, vol. XXX, pp. 149-153. 
Criticises Check-list for not attributing B. b. harlani to North Dakota. 
Blincoe, Benedict J. w , ,, . , . TT . OA 
1925. “Birds of Bardstown, Nelson County, Kentucky;” Auk, vol. XLIT, pp. 404-420. 
Borealis permanent resident, breeds. 
