THE BIRD BOOK 
Mangrove Warblers 
Rlack-throated Blue 
Warblers 
Greenish white 
653. Mangrove Warbler. JJendroica bryanti 
castoneiceps. 
Range. — Southern Lower Cali- 
fornia and western Mexico and 
Central America. 
This species is very similar to 
the Yellow Warbler but the en- 
tire head and neck of the male 
are yellowish chestnut. Their 
nesting habits or eggs do not vary in any essen- 
tial particular from those of the common Yellow- 
birds of the United States. 
654. Black-throated Blue Warbler. Deu- 
droica ccendescens cceridescens. 
Range.- — Eastern North America, breeding from 
northern United States northward; winters in 
the Gulf States and southward. 
These black-throated bluish-backed Warblers 
are abundant in swampy woodland both during 
migrations and at their breeding grounds; either 
sex can readily be identified in any plumage, by 
the presence of a small white spot at the base of 
the primaries. They nest in underbrush or low 
bushes only a few inches above the ground, mak- 
ing the nests of bark strips, moss rootlets, etc., 
lined with fine grasses or hair; 
the eggs are pale buffy white 
more or less dotted with pale 
brownish; size .65 x .50. Data. 
— Warren, Pa., June 9, 1891. 3 
eggs. Nest one foot from the 
ground in brush; made of fine 
pieces of rotten wood, laurel bark and lined with 
fine grasses. 
Buffy white 
654a. Cairns Warbler. Dendroica ccerulescens cairnsi. 
Range. — Mountain ranges of Noitli Carolina to Georgia. 
A darker form whose habits and eggs are identical with those of the last. 
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