THE BIRD BOOK 
624. Red-eyed Vireo. Vireosylva olivacea 
Range.- — United States, east of the Rockies, 
breeding north to Labrador, Manitoba and Brit- 
ish Columbia. 
This is the most common of the Vireos in 
the greater part of its range and is a most per- 
sistent songster, frequenting groves, open 
woods or roadsides. Their eyes are brown, 
scarcely if any more red than those of any 
other species and I have yet 
to see one with red eyes out- 
side of mounted museum spe- 
cimens. They swing their 
nests from the forks of trees 
at any elevation from the 
ground but usually below ten 
feet, and I have found them White 
where the bottom rested on the ground; they 
are made of strips of bark, fibre, etc., and often 
have pieces of string or paper woven into the 
sides; they are one of the most beautiful of 
bird homes and are woven so strongly that old 
nests hang to the branches for several seasons. 
Red-eyed Vireo Their three or four eggs, often accompanied by 
one of the Cowbirds, are laid in May or June; they are white, sparingly specked 
with blackish brown. Size .85 x .55. 
625. Yellow-green Vireo. Vireosylva fiavoviridis. 
Range.- — Southern Texas and southward to South America. 
Similar to the Red-eye but greener above and more yellowish on the sides. 
The nesting habits are the same and the eggs indistinguishable from those of 
that species. 
626. Philadelphia Vireo. Vireosylva philadelph/ca 
Range.— Eastern United States breeding from northern New England and 
Manitoba northward. 
This species is much smaller than the Red-eye (length 5 in.) 
and is yellowish below, and without black edges to the gray 
crown. Their eggs do not dif- 
fer from those of the Red- 
eyed Vireo except in size, 
averaging .70 x .50. 
White 
627- Warbling Vireo. Vireosylva gilva 
gilva. 
Range. — North America east to the Plains, 
breeding north to Labrador. 
This Vireo is nearly as abundant as the Red- 
eye but is not generally as well known, prob- 
ably because it is usually higher in the trees 
and more concealed from view. Their nests 
are like those of the Red-eye, but smaller and 
usually placed higher in the trees. The birds 
are even more persistent singers, than are the 
latter but the song is more musical and de- 
livered in a more even man- 
ner, as they creep about 
among the foliage, peering 
under every leaf for lurking 
insects. The eggs are pure 
write, spotted with brown or 
reddish brown. Size .72 x .52. 
380 
White 
