cus littoralis._

Range.--Eastern half of Canada and northern New England and New York.

These birds were formerly _hudsonicus_ in company with the western ones,
but they are now supposed to be a trifle smaller and with the crown
duller; this division does not affect the similarity of their habits and
eggs.

[Illustration 438: Hudsonian Chickadee.]
[Illustration: White.]
[Illustration: deco.]
[Illustration: left hand margin.]

Page 437

741. CHESTNUT-BACKED CHICKADEE. _Penthestes rufescens rufescens._

Range.--Pacific coast from Oregon to Alaska.

This species is similar to the Hudsonian in having a brown crown and
black throat, but has in addition, a chestnut colored back and sides.
They breed locally in Oregon, more commonly in Washington and are
abundant in British Columbia, making the nests of animal fur in holes in
dead stubs. Their eggs vary in number from five to eight and are creamy
white, dotted with reddish; size .60 x .45. Data.--Dayton, Oregon, May
28, 1906. Nest of hair and fur in willow stub, 10 feet up.

741a. CALIFORNIA CHICKADEE. _Penthestes rufescens neglectus._

Range.--Coast regions of California.

This variety is not as rufous on the sides as the more northern one. Its
habits and eggs are the same.

741b. BARLOW'S CHICKADEE. _Penthestes rufescens barlowi_.

Range.--About Monterey Bay, California.

This variety is said to have no rusty on the flanks. Its habits and eggs
are like those of the others.

742a. PALLID WREN-TIT. _Chamaea fasciata henshawi_.

Range.--Interior of California from Lower California to the Sacramento
Valley.

This duller colored variety has the same nesting habits and similar eggs
to those of the Coast Wren-tit.

742b. Coast Wren-Tit. _Chamaea fasciata fasciata._

Range.--Pacific coast from southern California north to Oregon.

These peculiar brownish gray colored birds frequent the tangled
underbrush of ravines and mountain sides where they lead the life of a
recluse. They nest at low elevations in the densest thickets, making
them of twigs, strips of bark, grasses and feathers, compactly woven
together and located in bushes from one to four feet from the ground.
They lay from three to five plain, unmarked, pure white eggs; size .75 x
.54. Data.--Wrights, Cal. Nest in a tangle of vines in a deep ravine;
composed of strips of bark, moss and grasses, lined with cattle hair; a
bulky nest.

743. BUSH-TIT. _Psaltriparus minimus minimus._

Range