ILLUSTRATIONS 



NEST OF THE BLACK-THROATED SPARROW IN 

 CACTUS Frontispiece 



Photograph by Wright M. Pierce 



TRACKS OF A ROAD- RUNNER 4 



Photograph by J. Smeaton Chase 



ROAD-RUNNERS ABOUT ONE-THIRD GROWN 4 



Photograph by Wright M. Pierce 



ROAD-RUNNER 21 



TRADE RAT'S HOME IN A ROCK-CREVICE 32 



GROUND PLAN OF THE TRADE RAT'S NEST 34 



AN ARROYO OF THE DESERT MOUNTAINS AN 

 IDEAL ENVIRONMENT FOR SMALL RODENTS 60 



FLASK-SHAPED NESTS OF CACTUS WREN IN OPUN- 

 TIA CACTUS , 72 



Photograph by Wright M. Pierce 



ROCKY GORGE ENVIRONMENT, COLORADO DESERT: 

 WASHINGTONIA PALM IN FOREGROUND 82 



From a drawing by Carl Eytel 



ANTELOPE CHIPMUNK FEEDING 100 



Photographs by Edwin A. Field 



A DESERT WASH, OR DRY, SANDY STREAM-BED: 

 THE HOME OF THE LE CONTE THRASHER, THE 



KIT FOX, AND THE COYOTE I2O 



