392 
INSECTIVOROUS BIRDS. 
bark of vines, and lined with downy vegetable substan- 
ces. The eggs, 4 to 6, are white, with a reddish tint, 
and sprinkled with brownish dots at the larger end. As 
he observed the female sitting so late as the 20th of Au- 
gust, it is probable they raise two broods in the season. 
It is very nearly allied to the preceding species, and does 
not differ from it in size. 
The Autumnal Warbler is from 5 J to 6 inches long, and about 9 in 
alar stretch. Individuals vary considerably in their color and mark- 
ings, some being darker above, and more yellow below. The under 
mandible and legs are yellowish. Audubon’s specimens are unusu- 
ally pale, as well as Wilson’s, but I have seen individuals nearly 
yellow beneath. 
HEMLOCK WARBLER. 
{Sylvia parus, Wilson, v. p. 114. pi. 44. fig. 3. [male.] 
Sp. Charact. — Yellow-olive with black spots ; head above yellow, 
dotted with black ; line over the eye, sides of the neck, and breast, 
yellow ; wings with 2 broad white bands, and with the tail black ; 
the 3 lateral tail-feathers white on their inner vanes. 
This very rare species was found by Wilson in the 
spring, in the Great Pine Swamp in Pennsylvania ; and 
appeared to take up its residence in the dark hemlock 
trees* of that desolate region. It was very lively and 
active, climbing among the branches and hanging from 
the twigs like a Titmouse. It darted after flies to a 
considerable distance, and beginning with the lower 
branches, hunted with regularity upwards to the summit 
of the tree, and in this way it proceeded very industrious- 
ly to forage through the forest till satisfied. At intervals, 
it stopped an instant to warble out a few low and sweet 
notes, probably for the recognition or company of its 
mate, which the discoverer, however, did not see. 
* Abies canadensis . 
