ILLUSTRATIONS 



RED-BREASTED NUTHATCH, PERCHED ON HAND 

 Photograph by Laurence J. Webster 



WHITE-BREASTED NUTHATCH, FEEDING FROM 

 HAND 



Photograph by Edwin C. Brown 



BOB-WHITE AT A FEEDING-STATION PROVIDED BY 

 THE HIGH-SCHOOL BOYS AT STONEHAM, MASS. 

 Photograph by John Tretilian 



BLUEBIRD AT ENTRANCE TO NESTING-BOX . 



Photograph by Author 



Frontispiece 



14 



HOUSE WREN AND TOMATO-CAN HOUSE 14 



Photograph by Author 



TREE- SWALLOW AT NESTING-BOX 14 



Photograph by W. H. Phillips 



MARTIN-HOUSE, ACCOMMODATING FIVE THOUSAND BIRDS 14 

 Photograph by C. E. Hamilton 



HOLLOW LIMB Box 16 



BIRCH-BARE HOUSE 17 



BLUEBIRD Box 18 



OBSERVATION Box, CLOSED 20 



OBSERVATION Box, OPEN 21 



