PRAIRIE FALCON 41 



Washington (Walla Walla); rarely to Okanagan Landing, British 

 Columbia; Montana (Billings); rarely southeastern Wyoming (Chey- 

 enne); and Nebraska (Alda and rarely Omaha). East to Nebraska 

 (rarely Omaha and Red Cloud); Kansas (Hays); Texas (Corsicana); 

 Nueva Leon (Monterrey); Hidalgo (Real del Monte); and Oaxaca 

 (Tehuantepec). South to Oaxaca (Tehuan tepee) ; and Baja Cali- 

 fornia (Cape San Lucas). West to Lower California (Cape San Lucas, 

 San Jose del Cabo, Mira Flores, and San Jose); California (Chino, 

 San Fernando, Paicines, Petaluma, and Marysville) ; Oregon (rarely 

 Corvallis); and Washington (Walla Walla). 



Spring migration. — Early dates of spring arrival at points north of 

 the winter range are: South Dakota — Harrison, February 7; Ver- 

 million, April 4. North Dakota — Harrisburg, March 21. Sas- 

 katchewan, Osier, April 11. Alberta — Manton, March 28. 



Fall migration. — Late dates of fall departure are: Alberta — Brooks, 

 October 12. Saskatchewan — Eastend, October 18. North Dakota — 

 Red River Valley, October 2; Foster County, October 8 (once, De- 

 cember 6, 1891). South Dakota (rarely winters) — Harrison, October 

 30; Yankton, November 9. Southward flights of this hawk have been 

 noted in August in New Mexico. 



Some idea of the movements and (for some birds) lack of extensive 

 travels of these falcons may be found in a few recovery records of 

 banded birds. Three juvenile birds banded on May 18, 1930, in the 

 Lucerne Valley, Mojave Desert, Calif., were retaken as follows: 

 The first on October 6, 1930, at Lancaster, Calif.; the second on Octo- 

 ber 28, 1930, near the point of banding; and the third on December 15, 

 1931, nine miles east of Calipatria, Calif. Another juvenile, banded 

 on May 2, 1928, at Merrill, Oreg., was recaptured about August 5, 

 1928, at Irvine, Alberta; while still another banded at the same time 

 and place was retaken at Arbuckle, Calif., on September 29, 1928. 



Casual records. — Among several records (some sight) for Minnesota, 

 the following may be mentioned: A specimen from Traverse County 

 on September 11, 1894; a female taken near Madison on September 

 24, 1895; an immature male near Pipestone, on November 1, 1930; 

 and a somewhat doubtful record of one purported to have been taken 

 during the winter of 1890-91 at Benson, Swift County. There are 

 several records for Iowa and a rather doubtful record without date or 

 exact locality for Wisconsin (Kumlien and Hollister, 1903). In 

 Illinois, one was taken at Rock Island sometime prior to 1872; one 

 at Mount Carmel on September 27, 1871; and one at Bridgeport in 

 July 1871. There also is a record of one on the Farallon Islands, 

 Calif., on December 18, 1886. 



Egg dates. — California: 134 records, March 1 to May 25; 67 records, 

 April 6 to 15, indicating the height of the season, 



13751—38 4 



