BIRD 8, CATERPILLARS. AND PLANT LICE. 



115 



Birds observed feeding 

 Rose-breasted Grosbeak. 

 Indigo Bunting. 

 English. Sparrow. 

 Scarlet Tanager. 

 Cedar Waxwing. 

 Red-eyed Vireo. 

 Yellow-throated Vireo. 

 Warbling Vireo. 

 White-eyed Vireo. 

 Black and White Warbler. 

 Panila Warbler. 

 Golden-winged Warbler. 

 Nashville Warbler. 

 Yellow Warbler. 

 Chestnut-sided Warbler. 



on Hairy Caterpillars — Concluded. 

 Maryland Yellow-throat. 

 Black-throated Green Warbler. 

 Oven-bird. 

 American Redstart. 

 Catbird. 



Brown Thrasher. 

 House Wren. 

 White-breasted Nuthatch. 

 Red-breasted Nuthatch. 

 Chickadee. 

 Wood Thrush. 

 Wilson's Thrush. 

 Robin. 

 Bluebird. 



Birds feeding 

 Yellow -billed Cuckoo. 

 Black-billed Cuckoo. 

 Hairy Woodpecker. 

 Downy Woodpecker. 

 Yellow-bellied Sapsucker. 

 Kingbird. 



Crested Flycatcher. 

 Phoebe. 

 Wood Pewee. 

 Least Flycatcher. 

 Blue Jay. 

 Crow. 



Baltimore Oriole. 

 Chipping Sparrow. 

 Towhee. 



on the Pupce or Imagoes. 



Rose-breasted Grosbeak. 



Indigo Bunting. 



English Sparrow. 



Scarlet Tanager. 



Red-eyed Vireo. 



Yellow-throated Vireo. 



Black and White Warbler. 



Yellow Warbler. 



American Redstart. 



Catbird. 



Brown Thrasher. 



Chickadee. 



Robin. 



Bluebird. 



It is interesting to note that certain birds feed on the eggs 

 of some of the parent moths, and that many birds take the 

 moths in flight. "Without going further into details here, I 

 shall endeavor later, in connection with the life history of 

 our more common and useful birds, 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 why this 



