Although, the number of stomachs examined was small, it is possible 
to check the results by comparison with those obtained by Wetmore, 
who anatyzed the contents of 84 stomachs of the typical subspecies 
from Porto Rico. His findings 3 show that the bird is decidedly 
frugivorous, inasmuch as wild fruits or berries were detected in 80 of 
the 84 stomachs examined and amounted to 57.82 per cent. The 
remaining 42.18 per cent represented animal matter, of which all but 
0.61 per cent was composed of insects or spiders, this small item being 
made up of two little tree toads (EleutJierodactylus) . As in the case 
of the Florida birds, spiders made up one of the larger items, occurring 
in 30 stomachs and comprising 7.74 per cent of the bulk. Orthop- 
teroid insects, consisting of grasshoppers (Locustidae) in three 
stomachs, walking sticks (Phasmidae) in two, praying mantids 
(Mantidae) in three, and miscellaneous orthopterans in nine, formed 
together 6.34 per cent. Cicadas, a lantern fly, and some small 
homopterans amounted to 8.29 per cent. Caterpillars were eaten 
by 21 birds and made a total of 9.7 per cent, the largest item of animal 
food. Weevils and leaf beetles, including the sugar-cane root borer 
and coffee-leaf weevil, occurred in more than a third of the stomachs, 
forming a total of 5.37 per cent. The remainder of the animal food 
was composed of ladybeetles (0.42 per cent), miscellaneous beetles 
(0.64 per cent), hymenopterans, including a wasp and an ant (2.03 
per cent), flies (0.21 per cent), and earwigs, which were detected six 
times (0.83 per cent). 
SUMMARY 
It is evident from both the Florida and the Porto Rico accounts 
that there is little actual harm done by the black- whiskered vireo, 
and that it is entitled to encouragement. The spiders and some of 
the beetles eaten may be considered beneficial, but the caterpillars, 
weevils, and earwigs are certainly injurious. The bugs are about 
equally divided between injurious and beneficial forms, and the 
remaining items are either too small to be of importance or are 
neutral in their economic aspects. 
RED-EYED VIREO 
Vireosylva olivacea 
The red-eyed vireo (fig. 1) is probably the most abundant of the 
members of its family. In the United States its range is restricted in 
general to the territory east of the Rocky Mountains; in Canada, it is 
practically transcontinental, with Great Slave Lake in the Mac- 
kenzie region approximately its northern limit. In migration the 
red-eye is reported as far south as Brazil. 
During the summer months in almost any bit of woodland one 
may find this olive-colored bird going about its business of catching 
insects, or later selecting the berries of many of our native shrubs, 
and singing as if it were second nature to be cheerful. Even at noon, 
when most of the feathered tribe seek the cool shade, this little 
fellow continues its song and its search for food. 
» Wetmore, Alexander, Birds of Porto Rico. U. S. Dept. Agr. Bui. No. 326, pp. 97-98, 1916. 
