RED-EYED VIREO. 
624. Vireosylva oUvacea. 6 inches. 
One of the most common of the family throughout its 
range, from the eastern slope of the Rockies over the United 
States. Wherever they may be found, their song is heard 
continuously during the day, from early morning until late in 
the evening, it consisting only of two or three notes, first 
a rising inflection, then a falling, and repeated over and 
over, even while they are feeding. The nests are placed 
within a few feet of the ground on an overhanging limb, sus¬ 
pended from a fork, and made of strips of bark, plant fiber 
and often with pieces of string and paper included in its 
construction. Three or four eggs are white, specked sparingly 
with brown (.85x.55). This is one of the favorite nests in 
which the Cowbird deposits its eggs. 
WARBLING VIREO. 
627. Vireosylva gilva. 5 y 2 inches. 
These are nearly as common as the above, but probably not 
as well known, as they keep well up in the tops of the taller 
trees, where they also build their nests, very much the same 
as the Red-eye. Their song is much more pleasant. Four 
eggs, like above (.72x.52). 
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