Birds of Massachusetts. 123 
cannot be mistaken for those of any other bird; nei- 
ther is any one who hears it at a loss to trace it to 
the performer, who never retires to the forest, and 
seems to delight in the society of man. At the same 
time his note is unambitious, and gives the listener 
the impression that it was not intended to be heard, 
but was simply an unconscious outpouring of the 
harmony and happiness of his breast. In this unpre- 
tending manner, he differs from most other birds of 
Sweet note, which appear as if fully aware of their 
powers, and desirous to display them. 
The nest of the warbler is suspended high in the 
air, formed of blades of grass disposed in a circular 
form, with bits of hornets’ nests, corn husks, or old 
apple blossoms, inserted between, and kept in place 
by threads of caterpillars’ silk ; the lining is of fine 
grass, pressed into the proper form with great care. 
The eggs are four or five, white, spotted with reddish 
black at the larger end. These birds remain with us 
from May to October, when they leave us reluctantly 
for the tropical regions. They are not, like the red- 
eye, seen in Florida in the winter. 
The Rep-ryep Vireo, Vireo olivaceus, is, perhaps, 
more common than the former; not equal to the 
warbler in its song, which is rather broken and in- 
terrupted, than easy and flowing ; but, nevertheless, 
. ls expressive and sweet, resembling that of the robin, 
though not so clear and strong. From May to 
August it sings all day, without ceasing, never op- 
_ Pressed by the severest heat ; at every short suspen- 
Sion of its song, it moves up and down the branches, 
