BIIWS, CATEBPJLLABS, AND PLANT LICE. 



115 



Birds observed feeding 

 Rose-breasted Grosbeak. 

 Indigo Bunting. 

 English. Sparrow. 

 Scarlet Tanager. 

 Cedar Waxwing. 

 Red-eyed Yireo. 

 Yellow-throated Yireo. 

 Warbling Yireo. 

 "White-eyed Yireo. 

 Black and White Warbler. 

 Parula Warbler. 

 Golden-winged ^^'arl)ler. 

 Kashville "NA'arbler. 

 Yellow Warbler. 

 Chestnut-sided Warbler. 



on Hairy Catcrjnllars — Concluded. 

 Maryland Yellow-throat. 

 Black- throated Green ^A'arbler. 

 Oven-bird. 

 American Redstart. 

 Catbird. 



Brown Thrasher. 

 House Wren. 

 White-breasted Xuthatch. 

 Red-breasted Xuthatch. 

 Chickadee. 

 Wood Tlirush. 

 Wilson's Thrush. 

 Robin. 

 Bluebird. 



Bii'ds feeding 

 Yellow -billed Cuckoo. 

 Black-billed Cuckoo. 

 Hairy AVoodpecker. 

 Downy Woodpecker. 

 Yellow-bellied Sapsueker. 

 Kingbird. 



Crested Flycatcher. 

 Pha'be. 

 Wood Pewee. 

 Least Flycatcher. 

 Blue Jay. 

 Crow. 



Baltimore Oriole. 

 Chipping Sparrow. 

 Towhee. 



on the Pnjyce or Imagoes. 



Rose-breasted Grosbeak. 



Indigo Bunting. 



English Sparrow. 



Scarlet Tanager. 



Red-eyed Yireo. 



Yellow-throated Yireo. 



Black and White Warbler. 



Yellow Warbler. 



American Redstart. 



Catbird. 



Brown Thrasher. 



Chickadee. 



Robin. 



Bluebird. 



It is interesting to note that certain bii'ds feed on the eggs 

 of some of the parent moths, and that man}^ birds take the 

 motlis in flight. Without going further into details here, I 

 shall endeavor later, in connection with the life history of 

 our more common and useful Ijirds, to give some information 

 regarding the kind of hairy caterpillars each species eats, 

 and its comparative usefulness in this respect. 



Assuming that our observations have proved that birds eat 

 hairy caterpillars, it may be interesting to inquire Avhy this 



