ILLUSTRATIONS. 



Bobolinks. Male and female in breeding season 

 Where Warblers Throng in Springtime 

 A Marshy Glade along a Stream . 

 Wood Thrush Setting. Photographed from 

 Bluebirds Building .... 



Immature Bluebird .... 



Robin. ^ Old male in autumn 



Robin's Nest ..... 



Wood Thrush ..... 



Wood Thrush. About three weeks old 



Wood Thrush's Nest 



Carolina Chickadee .... 



Chickadees ..... 



House Wren. About three weeks old 

 Carolina Wren .... 



Catbird ...... 



Catbird's Nest ..... 



Mockingbird ..... 



lift 



:ki;jc 

 Yellow Warbler. 



Adult male 

 Young male 



Yellow Warbler. 



Red-eyed Vireo 



Nest of Red-eyed Vireo. Af fer young had flown 



Cedar Birds 



Barn Swallow . 



Cliff Swallow . 



Purple Martin . 



Frontispiece 



VI 



xii 



3 

 6 



8 



ID 

 II 



13 



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15 

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17 



'9 

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