168 BIRDS OF OHIO. 
This shrike reaches northern Ohio about the middle of 
March and returns south about the first of October. 
Family VIREONID.  Vireos. 
Of the six vireos found in Ohio four remain to breed, 
and one of the four is found only in the southern parts of 
the state. These birds closely resemble the warblers in hab- 
its and carriage, but are more deliberate in their movements, 
and glean from leaves rather than from the twigs and stems, 
but they must sometimes make sallies into the air for flying 
insects, and frequently act like warblers. They usually sing 
all the time between mouthfuls, and may be known by their 
songs even when other characteristics fail. For the most 
part they are sober-colored, one species having a yellow 
throat. Their colors are shades of gray with some green 
and yellow. In contrast to the warblers, they are not patchy 
in color. 
The vireos are preéminently leaf gleaners, but they some- 
times catch flying insects after the manner of the warblers. 
Their food is therefore more largely eggs and larve of in- 
sects than the winged forms. It is just possible that they 
may take a little ripe fruit in its season, but if so, in too small 
quantities to count. 
230. (624.) VirEo oLtvaceus (Linn.). 66. 
Red-eyed Vireo. 
Synonyms: Vireosylvia olivacea, Muscicapa olivacea. 
Red-eyed Greenlet, Red-eyed Flycatcher, Red-eye, Preacher- 
bird. 
Kirtland, Ohio Geol. Surv., 1838, 163. 
This vireo is almost abundant in woods throughout the 
state. Its perpetual phrased song is likened to the admoni- 
tions of a preacher, and has given it the name of “Preacher 
Bird.” Its woven pensile nest is an easy mark for the Cow- 
bird, which is pretty sure to deposit one or more of its par- 
asitic eggs in the nest. I have found three eggs of the Cow- 
bird and but two of the rightful owner in one nest. The 
