treacherous. The eggs
are similar to those of the Song Sparrow but are generally darker and
more clouded and average smaller. Size .75 x .55.

585. FOX SPARROW. _Passerella iliaca iliaca._

Range.--Eastern North America, breeding from southern Canada northward,
and northwest to Alaska; winters in southern United States.

This large handsome species, with its mottled grayish and reddish brown
plumage and bright rufous tail, is very common in eastern United States
during migrations, being found in open woods and hedges in company with
Juncos and White-throated Sparrows, with which species their song vies
in sweetness. They nest usually on the ground, but sometimes in low
bushes; the nests are made of grasses and are concealed beneath the
overhanging branches of bushes or evergreens. The three or four eggs are
greenish-white, spotted and blotched with brown. Size .94 x .68.

[Illustration 358: Lincoln's Sparrow.]
[Illustration: Greenish white.]
[Illustration: Greenish white.]
[Illustration: Greenish white.]
[Illustration: Swamp Sparrow.]
[Illustration: left hand margin.]

Page 357

585a. SHUMAGIN FOX SPARROW. _Passerella iliaca unalaschensis._

Range.--Shumagin Islands and the Alaska coast to Cook Inlet.

Similar to the last but paler, being one of the several recent
unsatisfactory subdivisions of this genus. The nesting habits and eggs
of all the varieties are like those of the common eastern form.

585b. THICK-BILLED SPARROW. _Passerella iliaca megarhyncha._

Range.--Mountains of eastern California and western Nevada; locally
confined.

Entire upper parts and breast spots gray; wings and tail brown. It nests
in the heaviest underbrush of the mountain sides, building on or close
to the ground.

585c. SLATE-COLORED SPARROW. _Passerella iliaca schistacea._

Range.--Rocky Mountain region, breeding from Colorado to British
Columbia.

This variety which is similar to, but smaller than the last, nests in
thickets along the mountain streams. The eggs are like those of iliaca,
but average smaller.

585d. STEPHEN'S SPARROW. _Passerella iliaca stephensi._

Range.--Breeds in the San Bernadino and San Jacinto Mts. in southern
California.

Like the Thick-billed Sparrow, but bill still larger and bird slightly
so.

585e. SOOTY FOX SPARROW. _Passerella iliaca fuliginosa._

Range.--Coast of Washington and British Columbia; south to California in
winter.

585f. KADIAK FOX SPARROW. _Passerella ilia