NORTHERN SHRIKE 127 



(St. Louis, St. Charles, and Columbia) ; soiitliern Kansas (Wichita 

 and Coolidge) ; accidental at Fayetteville and Van Buren, Ark., and 

 at Decatur, Tex.; soutli-central Colorado (Pueblo, Colorado Springs, 

 and Salida) ; northern Utah (Ogden) ; central western Nevada 

 (Reese River, Lahontan Valley, and Carson) ; and northern Cali- 

 fornia (Rolands Marsh and Marysville) ; also occurs rarely or acci- 

 dentally south to north central New Mexico (Las Vegas and Santa 

 Fe) ; central Arizona (Flagstaff and Prescott), southwestern Utah 

 (St. George), and central California (Sacramento). West to cen- 

 tral California (Marysville) ; western Oregon (Grants Pass, Cor- 

 vallis, and Blaine) ; western Washington (Seattle, Sequin, and Bel- 

 lingham) ; western British Columbia (Crescent, Courtney, and Fran- 

 cois Lake) ; and Alaska (Chilkat, Bethel, Akiak, and Flat). 



The above ranges for the species in North America are divided into 

 two geographic races. The northern shrike {L. b. Ijorealis) breeds 

 east of Hudson Bay; the northwestern shrike {L. h. invictus) breeds 

 from Alaska to Manitoba. 



Migration. — From the available records the northern shrike appears 

 to be quite irregular in its migratory movements. Dates of spring de- 

 parture are: Pennsylvania — Harrisburg, March 10. New York — 

 New York, April 17. Massachusetts — Harvard, April 4. Maine — 

 Wells, April 26. Ontario— Ottawa, April 18. Ohio— Oberlin, April 

 3. JMichigan — Grand Rapids, March 29. Iowa — Grinnell, March 31. 

 Wisconsin — New London, March 23. Kansas — Manhattan, ISIarch 

 29. Nebraska— Neligh, ;March 31. South Dakota— Vermillion, 

 March 28. North Dakota— Charlson, March 12. Manitoba— Mar- 

 garet, April 6. Saskatchewan — Indian Head, April 21. Colorado — 

 Yuma, April 4. Wyoming — Laramie, April 15. Montana — Boze- 

 man, April 3. Washington — Pullman, April 8. British Columbia — 

 Okanagan Landing, April 20. 



Early dates of spring arrival are: Mackenzie — Fort Liard, April 2. 

 British Columbia — Atlin, April 18. Alaska — Fairbanks, March 31. 



Late dates of fall departure arc: Alaska — Bethel, November 7. 

 Yukon — Forty Mile, October 12. Mackenzie — Simpson, October 12. 

 British Columbia — i^tlin, October 12. 



Early dates of fall arrival are : British Columbia — Chilliwack, Sep- 

 tember 27. Washington — Tacoma, October 11. Montana — Fortine, 

 September 27. Wyoming — Yellowstone National Park, October 15. 

 Colorado — Colorado Springs, October 2. Saskatchewan — Eastend, 

 October 2. Manitoba — Aweme, October 3. North Dakota — Argus- 

 ville, October 16. South Dakota — Pierre, October 21. Nebraska — 

 Lincoln, October 27. Kansas— Onaga, October 19. Minnesota — 

 Lanesboro, October 18. Wisconsin — La Crosse, October 18. Iowa — 

 Keokuk, October 19. Michigan— Sault Ste. Marie, October 9. Il- 

 linois—Glen Ellyn, October 24. Ontario— Toronto, October 15. 



