PALMER'S THRASHER 389 



DISTRIBUTION 



Range. — Southwestern United States and northwestern Mexico. 



Breeding range. — The Bendire's thrasher breeds north to southern 

 California (Victorville, Cima, and Rock Spring) ; central and north- 

 eastern Arizona (Beale Spring, Klethla Valley, Navajo County, and 

 Chin Lee). East to northeastern Arizona (Chin Lee and St. 

 Michaels) ; extreme western New Mexico (Catron County, 25 miles 

 east of Springerville, Arizona, and Rodeo, Hidalgo County) ; and 

 northwestern Chihuahua (Sierra Carrizalillo) . South to northwest- 

 ern Chihuahua (Sierra Carrizalillo) ; and central Sonora (Tecoripa 

 and Guaymas) . West to western Sonora (Guaymas, Artiz, and Santa 

 Ana) ; Arizona (Menager's Dam, Gunsight, Gilabend, and Congress 

 Junction) ; and southern California (Palm Springs and Victorville). 



'Winter range. — The winter range of the Bendire's thrasher cannot 

 be exactly defined on the basis of available records. It withdraws 

 from the northern part of its range, but is resident in southern Ari- 

 zona, probably north about to the Gila River (the northernmost winter 

 record is Phoenix) , It moves southward to southern Sonora (Camoa, 

 Tesia, and Alamos) and to southern Sinaloa (Escuinapa). 



Casual records. — In a suburb of Los Angeles, Calif., an individual 

 was picked up on September 10, 1912. The only record for Nevada is 

 of two individuals seen and one collected on May 16, 1939, near Delmar, 

 Lincoln County. There are three records for Utah ; a nest and eggs 

 from the shore of Utah Lake south of Lehi on April 26, 1932 ; a single 

 bird seen and collected 10 miles southeast of Escalente, Garfield 

 County, on May 9, 1937 ; and two specimens collected and other birds 

 seen on July 4, 1927, in Monument Valley where they may be of 

 regular occurrence. A specimen was collected in El Paso County, 

 Colo., at Austins Bluffs, on May 8, 1882. 



Egg dates. — Arizona: 143 records, February 24 to August 1; 76 

 records, March 16 to April 15, indicating the height of the season. 



TOXOSTOMA CURVIROSTRE PALMERI (Cones) 



PALMER'S THRASHER 



PliATES 74-77 



HABITS 



When I did my field work in southern Arizona, in 1922, Palmer's 

 thrasher was regarded as the breeding form of this species all across 

 the southern part of the State. At that time, J. Eugene Law (1928) 

 had not called attention to the fact that the form breeding: east of the 

 Santa Rita Mountains in southeastern Arizona and southern New 

 Mexico is celsuni and not palmeri. But, as our field work covered 

 much of both Cochise and Pima Counties, we were able to make the 

 acquaintance of both forms. 



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