BLACK PIGEON HAWK 83 



Taku River, September 26 ; Admiral Island, September 30. Yukon — 

 mouth of Moose River, October 1. Alberta — Calgary, October 14; 

 Fort McKay, October 15; Belvedere, October 18. Montana — Big 

 Sandy, September 30; Fallon, October 22. Mackenzie — Fort Resolu- 

 tion, September 27; Grand Detour, Slave River, October 3; Roche 

 Trempe-Feau, October 8. Keewatin — Oxford House, September 10. 

 Saskatchewan — Eastend, October 4. Manitoba — Oak Lake, October 

 19; Ninette, October 28; Killarney, November 4; Aweme, November 

 15. North Dakota — Argusville, October 14; Grafton, October 18. 

 South Dakota — Yankton, October 16; Forestburg, October 24; mouth 

 of the Vermillion River, October 25. Minnesota — Minneapolis, 

 October 6; St. Vincent, October 11; Virginia, October 16. Wiscon- 

 sin — Shiocton, October 9; New London, October 14; North Freedom, 

 October 30. Prince Edward Island — North River, October 3. Nova 

 Scotia — Pictou, October 17; Halifax, November 4. New Bruns- 

 wick — Scotch Lake, November 3; St. John, November 5. 



Early fall arrivals in the southern part of the winter range are 

 generally in September and October. Among such are: Florida — 

 Pensacola, September 4; St. Johns County, September 15; Wakulla 

 County, September 27. Puerto Rico — Mayaguez, October 1. Ven- 

 ezuela — Culata, September 18. 



The banding files of the Biological Survey contain two records that 

 throw light on the movements of this species. Both birds were banded 

 at Rosebud, Alberta, and are for the subspecies richardsoni. One 

 banded on July 8, 1930, was shot in the Gila Valley, near Stafford, 

 Ariz., on December 12, 1930, while the other, banded on July 6, 1931, 

 was recaptured near Tucson, Ariz., on January 28, 1933. 



Casual records. — The pigeon hawk is probably a fairly regular fall 

 and winter visitor on Bermuda, but only two records are now avail- 

 able. One was seen on December 2, 1874, and the following day a 

 specimen was obtained. Another was taken on March 23, 1919. 



Egg dates. — Arctic America: 8 records, May 25 to June 29. Alberta 

 to Manitoba: 19 records, May 7 to June 6; 10 records, May 18 to 

 June 4, indicating the height of the season. 



Ontario to Newfoundland: 14 records, May 18 to June 22; 7 records, 

 May 24 to June 9. 



Labrador: 8 records, May 15 to June 30. 



FALCO COLUMBARIUS SUCKLEYI Ridgway 

 BLACK PIGEON HAWK 



HABITS 



This dark race of the pigeon hawk is supposed to be resident in 

 the humid, northwest-coast region, but the limits of its restricted 

 range are none too well known. It is supposed to breed in British 



