BLUE-HEADED VIREO. 299 
wild cherry, and was fifty feet from the ground. So lofty a position is probably very 
unusual. Dr. Brewer says, he has never found a nest higher than ten feet from the 
ground. 
The eggs vary from four to five in number. I have never found more than four 
in a set. The ground-color is white, often with a very perceptible roseate tint when 
fresh, in which respect they differ from all the eggs of other Vireos. They are more or 
less boldly marked with rosy and chestnut-brown spots, chiefly at the larger end. 
The food of this Vireo consists: during the breeding time entirely of insects. Later 
in the season and in their winter-quarters, when insect-food gets scarce, various kinds of 
berries are also eaten. In its habits it resembles the other larger Vireos in almost every 
particular. 
Early in September the majority leave Wisconsin for the South. Numbers of them 
winter in the dense hammock and palmetto woods of southern Florida, but the greater 
number pass further on to the West Indies. From the interior of our country they 
migrate to eastern Mexico, Central America, and even to Columbia. 
NAMES: YELLOW-THROATED VirzEO, Yellow-throated Greenlet. —-Goldbrustvireo (German). 
SCIENTIFIC NAMES: VIREO FLAVIFRONS Vie.u. (1807). Vireosylvia flavitrons Baird (1866). Lani- 
vireo flavifrons Lawr. (1866). Muscicapa sylvicola Wils. (1810). 
DESCRIPTION: “A large, stout, highly colored species, with thicker bill than any of the foregoing. No 
evident spurious first quill; primaries apparently only nine, as in V. olivaceus and V. philadelphicus. 
Above, rich yellow-olive, shading to bluish-ash on the rump; below, bright yellow, the belly and vent 
abruptly white, the sides shaded anteriorly with olive, posteriorly with plumbeous. Extreme forehead, 
supraciliary line, and eye-ring, yellow like the throat. Lore, dusky; wings, dusky, with much white 
edging and two broad white cross-bars; tail, like wings, the feathers broadly edged with white. Bill 
and feet, dark plumbeous. 
“Length, 5.75 to 6.00 inches; wing about 3.00; tail only 2.25 inches.’’ (Stearns & Coues, 
“N. E. B. L.,” Vol. I, p. 201.) 
BLUE-READED VIREO. 
Vireo solitarius V1EILLOT 
Als HIS FINE Vireo is not at all uncommon during the breeding season in Wisconsin 
9 and other Northern States and New England, although nowhere prominent in 
the composition of our ornis. It is more abundant in the Canadian fauna than in the 
Alleghanian. In Manitoba, north to the Mackenzie, it is rather common, also in the 
mountainous regions of New York, and some have been found breeding even in the 
Middle States. It occurs west to the -Plains. 
In the coniferous region of Wisconsin the Blue-headed, or Solitary Vireos are the 
first arrivals of the genus. They usually appear about May 5 to 9, if the weather 
permits, frequenting usually the woodland border, where the beautiful song may be 
heard from early morning till late in the afternoon. The basket-like hanging nest is 
from four to ten feet from the ground, and is always attached to a horizontal branch, 
