x .48.
Data.--Huachuca Mts., Arizona, June 21, 1901. Nest in a sugar pine near
extremity of branch, 25 feet from the ground and 20 feet out from the
trunk of the tree; composed of lichens and fine rootlets, lined with
plant down.

[Illustration 393: White.]
[Illustration: Parula Warbler. Sennett's Warbler.]
[Illustration: Grayish blue.]
[Illustration: deco.]
[Illustration: right hand margin.]

Page 392

652. YELLOW WARBLER. _Dendroica aestiva aestiva._

Range.--Breeds in the whole or North America; winters south of our
borders.

This well known and very common species is wholly yellow, being more or
less greenish on the back, wings and tail, and the male is streaked on
the sides with chestnut. They nest anywhere in trees or bushes, either
in woods, pastures, parks or dooryards, and their sprightly song is much
in evidence throughout the summer. The nests are usually placed in
upright crotches or forks, and are made of vegetable fibres and fine
grasses compactly woven together and lined with plant down and hair; the
eggs, which are laid in May or June, are greenish white, boldly specked
in endless patterns with shades of brown and lilac; size .65 x .50.

652a. SONORA YELLOW WARBLER. _Dendroica aestiva sonorana._

Range.--Arizona, New Mexico and western Texas, southward.

This form is brighter yellow, especially above, than the last. The
nesting habits are the same and the eggs indistinguishable from those of
the preceding.

652b. ALASKA YELLOW WARBLER. _Dendroica aestiva rubiginosa._

Range.--Breeds in Alaska and on the coast south to Vancouver; winters
south of the United States.

Similar to the common Yellow Warbler but slightly darker above; its eggs
and nesting habits are the same.

[Illustration 394: Greenish white.]
[Illustration: Cape May Warblers. Yellow Warblers.]
[Illustration: deco.]
[Illustration: left hand margin.]

Page 393

[Illustration 395: J. B. Pardoe.
NEST OF YELLOW WARBLER.]

Page 394

653. MANGROVE WARBLER. Dendroica bryanti castaneiceps.

Range.--Southern Lower California
and western Mexico and
Central America.

This species is very similar to
the Yellow Warbler but the entire
head and neck of the male
are yellowish chestnut. Their
nesting habits or eggs do not vary in any essential
particular from those of the common Yellow-birds
of the United States.

654. BLACK-THROATED BLUE WARBLER. _Dendroica caerulescens caerulescens._

Range.--Eastern North America,