NUTTALL'S POORWILL 193 



In Arizona, New Mexico, and central Texas it is usually absent 

 from late in October to early in April. It apparently winters more 

 or less regularly in southern Texas, though its main winter range 

 is in Mexico. 



DISTRIBTTnON 



Range. — Central and western United States, and southern British 

 Columbia, south to central Mexico. 



Breeding range. — The breeding range of the poorwill extends 

 north to southern British Columbia (Kamloops and Okanagan Land- 

 ing) ; Montana (Billings and Terry) ; northwestern South Dakota 

 (Slim Buttes) ; north-central Nebraska (Long Pine Canyon) ; and 

 southwestern Iowa (Pottawattamie County). East to southwestern 

 Iowa (Pottawattamie County) ; eastern Kansas (Blue Rapids, Onaga, 

 Lawrence, and Clearwater) ; central Texas (Kerrville, San Antonio, 

 and Somerset) ; eastern Coahuila (Sabinas and Saltillo) ; and probably 

 Morelos (Cuernavaca). South to probably Morelos (Cuernavaca) ; 

 southern Sonora (Alamos) ; and southern Baja California (San Jose 

 del Cabo). West to Baja California (San Jose del Cabo, Miraflores, 

 Triunfo, Pozo Grande, San Fernando, Santo Domingo, La Joya, San 

 Telmo, and probably Todos Santos Islands) ; California (San Diego, 

 Escondido, Ojai Valley, Santa Cruz Mountain, San Geronimo, Covel, 

 and probably Yreka) ; Oregon (Brownsboro, Bridge Creek, and 

 probably Netarts) ; eastern Washington (Crab Creek and Cheney) ; 

 and British Columbia (Summerland and Kamloops). 



Winter range. — The species is probably resident in the southern part 

 of its range and during the winter season is found north to southern 

 California (Berryessa Station, Paicines, Death Valley, and Laguna) : 

 rarely southern Arizona (Tucson) ; and southern Texas (El Paso, 

 rarely Kerrville, Laredo, and Falfurrias). 



The range as outlined is for the entire species, which has been 

 separated into four currently recognized geographic races. The typ- 

 ical subspecies, Nuttall's poorwill {P. n. nuttalli) occupies all the 

 United States portion of the range except that part of California 

 west of the Sierra Nevada. The dusky poorwill {P. n. calif ornicus) 

 is found in western California from the northern part of the Sacra- 

 mento Valley south to northwestern Baja California; the desert 

 poorwill {P. n. hueyi) is restricted to the lower Colorado River 

 Valley, southwestern Arizona, and northeastern Baja California; and 

 the San Ignacio poorwill {P. n. dicheyi) is found in Baja California 

 south of latitude 30° N. 



Spring migration. — Early dates of spring arrival are: Texas — 

 Kerrville, February 4; San Antonio, Februaiy 27. Kansas — Man- 

 hattan, April 7; Onaga, April 7. New Mexico — Chloride, March 31 ; 



178223 — 40 19 



