FAMILY Vireonide. 
The structure of his song is not unlike that of the 
Yellow-throated Vireo, as the following notation will 
show; but there is a certain elementary character to the 
song of each of the birds which written music can not 
easily express—i. e., the buzz of one and emphasis of 
the other: 
This group of three 
sited tones 1s characteristic. 2 
One need not suppose for an instant, that the notes as I 
have recorded them represent tones accurately struck 
by the bird; they do not. But they do represent the 
approximate swing of his slurred tones placed as cor- 
rectly as possible upon the musical staff. 
One may think that the music looks like that of the 
Robin; but I am quite sure that my explanations and 
musical signs will constitute an evidence sufficient to 
show that such an impression produced upon the eye 
could not be other than an entirely superficial one. 
White-eyed The White-eyed Vireo is an extremely 
Virco uncommon bird in New England. In 
Vireo : : - 
noveboracensis Campton, N. H., his voice is never heard, 
L. 5.25 inches and in the vicinity of Boston it is very 
May 15th. rare. In northern New Jersey, however, 
the bird is an almost common summer resident, and his 
notes enliven the thick shrubbery and undergrowth 
wherever there is a pond or stream with a marshy 
border. He is also common in the vicinity of Washing- 
ton. His colors are, gray olive-green on the back: 
brown-olive on wings and tail; two distinct yellowish 
cream wing-bars on each wing; the region in front of 
and around the eye yellow; throat and under parts dull 
white; breast and sides tinged with greenish yellow 
162 
