The Migration of North American Sparrows 19 



larger part return to the mountains in late March and April, while the last one 

 was noted at Boulder, April 28, 1912; Altoona, May i, 1903; Fountain, May 

 3, 1872; Ramah, May 16, 1904, and Buttes, May 16, 1908. Up in the moun- 

 tains where the species does not winter, the first arrived at Sweetwater, March 

 5, 1898, and in Estes Park, April 8, 191 2. The extreme southern point of the 

 breeding range is the Zuni Mountains, N. M. In fall migration, the species 

 spreads over all of New Mexico west of the Rio Grande and east to the Man- 

 zano Mountains, October 8, 1903; Corona, October 12, 1902; and south to the 

 MogoUon Mountains, October 18, 1906. In 1892, it was noted along the south- 

 ern boundary of New Mexico until April 18, and in 1890, at Carlisle until 

 April 15. The first arrival was noted in the San Francisco Mountains, Ariz., 

 October 14, 1857; Santa Catalina Mountains, October 15, 1884, and the 

 Huachuca Mountains, October 29, 1907. The species remained in these last 

 mountains to April 6, 1902, and a laggard to May 2, 1896. The last one was 

 recorded at Oracle, April 6, 191 1. The earliest record at Nogales, Sonora, is 

 October 26, 1893, ^-nd the latest at Cienega de las Vacas, Durango, April 3. 

 The species has strayed far beyond its normal limits to Pasadena, Calif., 

 October 26, 1894, and to Julian, Calif., November 18, 1906. 



ARIZONA JUNCO 



The Arizona Junco is the common breeding form in the mountains of 

 southern Arizona and the neighboring parts of Mexico, though much the larger 

 number of individuals breed south of the United States, while a few breed in 

 the Animas Mountains on Animas Peak in southwestern New Mexico. It is 

 apparently non-migratory and remains throughout the year at its breeding 

 grounds high up in the mountains. 



BAIRD'S JUNCO 



This is a non-migratory species, inhabiting the mountains of the southern 

 end of Lower California. 



GUADALUPE JUNCO 



This species is known only from Guadalupe Island, off the coast of Lower 

 California. 



