CAPRIMULGnXE: Goatsuckers 



133 



CAPRIMULGID^E (Family Goatsuckers, so-called because anciently 

 believed actually to suck the milk of goats) : Bill extremely short ; gape 

 enormous; eyes large; hunt by twilight. Diet exclusively of insects, taken 

 on the wing. 



Arizona S.V. 

 Fairly common Upper 

 Sonoran and Transition 

 Zones of mountains, of 

 southeastern Arizona. Win- 

 ters southward to Guate- 

 mala, but exact range not 

 known. Nests on ground. 



Stephens Whip-poor-wil I 



Southern California Res. 

 - Common locally, on the 

 coastward slope, chiefly on dry, 

 brushy hillsides, where it is 

 often heard but rarely seen. 

 Rare in winter; in warm, ^ 

 sheltered places. "* 



S.V. Common locally Arizona and eastern California. Occurs 

 from lowest and hottest deserts to 7500 feet or more in mountains. 

 Localized by necessity of water. Numerous about reservoirs or "tanks," 

 which frequently offer the only water supply over a wide area. 



