BIRDS, CATERPILLARS, AND PLANT LICE. 
115 
Birds observed feeding on Hairy Caterpillars — Concluded. 
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. 
Parula Warbler. 
Golden-winged Warbler. 
Nashville Warbler. 
Yellow Warbler. 
Chestnut-sided Warbler. 
Birds feeding on the 
Yellow-billed Cuckoo. 
-Black-billed Cuckoo. 
Hairy Woodpecker. 
Downy Woodpecker. 
Yellow-bellied Sapsucker. 
Kingbird. 
Crested Flycatcher. 
Pheebe. 
Wood Pewee. 
Least Flycatcher. 
Blue Jay. 
Crow. 
Baltimore Oriole. 
Chipping Sparrow. 
‘Towhee. 
Northern 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. 
American Robin. 
Bluebird. 
Pupe 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 
