616 MICHIGAN BIRD LIFE. 
igan it has been found thus far only in the valleys of streams where these 
trees abound. Nevertheless, it has been sought for carefully in many 
regions in middle Michigan where sycamores are abundant, but thus far 
without success. 
The closely related Yellow-throated Warbler, D. dominica, does not 
occur in Michigan, although the name occurs in Stockwell’s list of Michigan 
birds (Forest and Stream, VIII, 17, 261), and the species was erroneously 
included in the second edition of Professor Cook’s list of 1893. This bird 
nests at the south among the upper branches of high trees (often pines), 
where it builds a bulky nest and lays four eggs, with a grayish white ground 
color, dotted with pale lilac. Probably the nest and eggs of the Sycamore 
Warbler, resemble those of its near relative. 
According to Ridgway the song of the Sycamore Warbler “is somewhat 
like that of the Indigo-bird, and it requires a practiced ear to distin- 
guish them; the tone is remarkably similar, but. there is a difference in 
the modulation, which, after one becomes thoroughly acquainted with it 
renders it distinguishable. In its motions this warbler partakes much of 
the character of a creeper, often ascending or descending trunks of trees 
or following their branches much in the manner of Mniotilta.”” According 
to Dr. Gibbs “The song is a very characteristic one and bears no resemblance 
to anything I have ever heard. It may be expressed by the syllables 
‘tee-o-tee-o-tee-o, toww-tee,’ accented on the second tee and with a rising 
inflection on the final syllable. This song is repeated at intervals of 15 
seconds, and kept up for an hour or more” (Forest and Stream, July 30, 
1885). 
‘ 
TECHNICAL DESCRIPTION. 
Adult male: Upper parts clear gray with the exception of the forehead, which is black; 
a narrow white linc from base of upper mandible to and over the eye, becoming broader 
behind the eye, where it often blends with a large white patch on the side of the neck; 
a white spot on the lower eyelid; lores, cheeks, and a line along the side of the neck deep 
black, continued into a series of black spots and streaks along the sides of breast and 
belly; chin, and throat golden yellow, sharply bounded on the sides by black and below 
by the pure white of the upper breast; rest of under parts white; two white wing-bars; 
two outer tail-feathers with terminal half of inner webs white. 
Length 4.50 to 5.50 inches; wing 2.50 to 2.70; tail 2 to 2.20. Sexes alike in color and 
size. 
281. Black-throated Green Warbler. Dendroica virens (Gmel.). (667) 
Synonyms: Evergreen Warbler, Green Black-throat.—Motacilla virens, Gmel., 1789. 
Sylvia or Sylvicola virens of the older writers, Dendroica virens of the more recent. 
Fig. 139. 
The velvet-black throat, breast and sides, and bright yellow cheeks 
and face, are sufficiently characteristic in the adult male. In addition, 
the upper parts are rich olive green and there are two broad white wing-bars 
and conspicuous white tail markings. 
Distribution.—LEastern North America to the Plains, north to Hudson 
Bay Territory; breeding from Connecticut and northern Illinois northward, 
and south along the Alleghanies to South Carolina. In winter south to 
Cuba and Panama. 
This is one of our most abundant warblers during migration and is 
resident in considerable numbers during summer in a large part of the 
