40 Birds of Canada. 
C. excubitorides—The White-rumped Shrike. 
The characteristics of this shrike are similar to 
those of the preceding species, except that the 
tail is shorter and the head larger. 
Sub-Family VIREONINA.—The Vireos. 
Vireo oltvaceus——The Red-eyed Vireo. 
This is one of our most industrious and inter- 
esting little visitors. It is six and a-half inches 
long, the wing three and a-half inches. Color, 
olive-green, above ; white, below ; the head, dark- 
ash; andiris, red; a whitish line from the bill 
over the eye. The nest is generally suspended 
from forked twigs; eggs, four to six, spotted with 
reddish-brown. Feeds entirely upon insects and 
their larve. The Red-eyed Vireo is one of the 
earliest singers of spring, and the latest of autumn. 
Its notes are loud, clear, and melodious. Through- 
out the day he hops from branch to branch, 
searching in the foliage for caterpillars and nox- 
ious larve. Arrives in Canada about the tenth 
of May, and departs for the south early in 
October. : 
V. gilvus —The Warbling Vireo. 
This pretty bird is five and a-half inches long ; 
the color, olive-green, above; beneath, white, 
tinged with yellow. Its song is very mellow and 
