THE BIRD BOOK 
646b. Dusky Warbler. V ermivora celata sor- 
dida. 
Range.— Santa Barbara Islands, off California. 
Said to be duller colored and darker than the 
others. The eggs cannot be distinguished. 
647. Tennessee Warbler. 
648. Parula Warbler. CompsothU/pis 
americana americana. 
Tennesee Warblers 
Olive Warblers 
White 
Range. — Eastern United States, breeding in the 
southern half. 
The upper parts of this handsome species are 
bluish gray with a greenish patch in the middle 
of the back; the throat and breast are yellow 
with a patch of black and chestnut. They are 
abundant birds in suitable localities, breeding in 
swamps, especially those with old or dead trees 
covered with hanging moss (usnea). The nests may be found 
at any height from the ground, and are usually made by turn- 
ing and gathering up the ends of the hanging moss to form a 
pocket, which is lined with fine grass or hair. The four to six 
eggs are white or creamy white, wreathed with specks of reddish 
brown and chestnut. Size .64 x .44. 
V ermivora peregrina. 
Range. — Eastern North America, breeding from 
the northern tier of states, northward; winters to 
northern South America. 
This species has greenish upper 
parts, white lower parts and super- 
ciliary line, and gray crown and 
nape. They nest either on the 
ground or at low elevations in 
bushes, making the structure of 
grasses and fibres, lined with hair; 
they are found on wild, tangled hillsides and 
mountain ranges. The eggs are pure white, spar- 
ingly specked with reddish brown. Size .62 x .45. 
648a. Northern Parula Warbler. Compsothlypis americcnia usuecr. 
Range. — Northern half of eastern United States and southern Canada; winters 
from the Gulf States southward. 
The nesting habits of the noi'thern form of the Blue-yellow-backed Warbler 
are in all respects like those of the last, and like them, where moss grown 
swamps are not to be found, they have been known to construct nests of moss 
suspended from branches of trees, or to nest in bunches of dead leaves. Data. — 
Oxford, Mass., June 7, 1895. Nest in a dead pine swamp; made in end of hanging 
moss about 6 feet from the ground. Large colony breeding. 
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