INDEX 



Woodpecker, red-headed, economic 

 status of, 112; food of, 115; kinds 

 of insects eaten by, 74; nesting- 

 box for, 243; plumage of nestlings 

 of, 46. 



Worthington, Charles C, 219. 



Wren, Bewick's, song of, 20. 



Wren, house, attacked by English 

 sparrow, 153; dates of migration 

 and nesting, 62; duration of song- 

 period, 14: economic status of, 

 113; food of, 115; lesson on, 303- 

 04; nest of, 29; nesting-box for, 

 243; number in United States, 

 126; number killed by cats, 140; 



number of broods of, 32; rearing 

 young, 38-41; song of, 22; table 

 of nesting-habits, 35, 36; time of 

 building nest, 30. 



Wren, marsh, dates of migration 

 and nesting, 62; insects eaten by, 

 76; nest of, 28, 30. 



Wren-tit, insects eaten by, 82. 



Yellow-throat, Maryland, dates of 

 migration and nesting, 62; num- 

 ber of insects eaten by, 73; song 

 of, 16. 



Young birds, feeding, 35; food of, 

 36; time in nest, 34; value of, 76. 



