764 U.S. NATIONAL MUSEUM BULLETIN 2 37 part 2 



at Gardner Canyon on the east side of the Santa Rita Mts., Feb. 6 

 and April 10 (R. Roy Johnson), 1960; 1 was seen along RUlito 

 Creek near Tucson, Dec. 6, 1959 (Thornbiirg) , and 4 were noted on 

 the Tucson Christmas count, Jan. 2, 1960." Despite these recent 

 records, Monson also writes me that: "The picture of Baird's sparrow 

 in winter is indeed a cloudy one. Many, or even all sight records, 

 are very unsatisfactory and must on the whole be disregarded." 

 A letter from Roger T. Peterson adds: "Obviously there are very few 

 definite records for Mexico." 



Distribution 



Range. — High plains from southern prairie provinces to north cen- 

 tral Mexico. 



Breeding range. — Baird's sparrow breeds from southern Alberta 

 (Castor), southern Saskatchewan (Crane Lake, Kutawagan Lake), 

 and southern Manitoba (Oak Lake, Grand Rapids, Lake St. Martin) 

 south to northwestern Montana (Dutton), northwestern and central 

 South Dakota (Harding County, Eureka), southeastern North Da- 

 kota (northern Sargent County), and central western Minnesota 

 (Wheaton). 



Winter range. — Winters from southeastern Arizona (San Rafael 

 Valley, Sonoita, Chiricahua Mountains) and southern New Mexico 

 (Animas Valley) south to northern Sonora (10 miles south of Sasabe), 

 Durango (Ojito), and Coahuila (Saltillo); in migration to western 

 and south central Kansas (Pendennis, Udall), central Missouri (Co- 

 lumbia), central Oklahoma (Cleveland County), and western and 

 central Texas. 



Casual records. — Casual in southern California (Joshua Tree Na- 

 tional Monument). Accidental in New York (Montauk). 



Migration. — Early dates of spring arrival are: Arkansas — Winslow, 

 March 23. Missouri — St. Louis, March 17. Ohio — Ottawa County, 

 April 22. Iowa — Grinnell, March 24. Minnesota — White Earth, 

 Becker County, May 5. Oklahoma — Inola Prahie, April 12. Ne- 

 braska — Holstein, March 28. North Dakota — Billings County, April 

 25; Jamestown, May 5; Cass County, May 6 (average. May 17). 

 Manitoba — Treesbank, April 21; Whitewater Lake, average May 9. 

 Saskatchewan — Dinsmore, April 19. New Mexico — Rodeo, April 9. 

 Arizona — Tucson, April 21. Colorado — Fort Lyon, April 1. Wyo- 

 ming — Torrington, May 2. Montana — Missoula, April 20; Fallon, 

 April 24. Alberta— Castor, Alay 10. 



Late dates of spring departure are: Missouri — St. Joseph, May 25. 

 Texas — Gainesville, April 24. Arizona — Cochise County, May 4; 

 base of Huachuca Mountains, May 3. 



