size .62 x .48. Data.--Fargo, Ontario, June 2, 1901. Nest in a burr oak,
18 feet from the ground on a horizontal limb.

[Illustration 398: Magnolia Warblers. Cerulean Warblers.]
[Illustration: White.]
[Illustration: White.]
[Illustration: No caption.]
[Illustration: left hand margin.]

Page 397

[Illustration 399: NEST OF MAGNOLIA WARBLER.]

Page 398

659. CHESTNUT-SIDED WARBLER. _Dendroica pensylvanica._

Range.--United States, east of the Plains, breeding in the Middle States
and Illinois, north to Manitoba and New Brunswick. Winters south of our
border.

The adults of this handsome species may readily be known by the white
underparts and the broad chestnut stripe on the flanks; the crown is
yellow. They frequent low brush in open woods or on hillsides and
pastures, nesting at low elevations, usually below three feet from the
ground, and often concealing their nests beneath the leaves in the tops
of low small bushes. The nests are made of grasses, weed stems and some
fibres, but they do not have as wooly an appearance as those of the
Yellow Warblers which nest in the same localities and similar locations.
Their eggs are white or creamy white (never greenish white), specked
with brown and gray. Size .65 x .50. Data.--Worcester, Mass., June 6,
1890. Nest in the top of a huckleberry bush, 2 feet from the ground;
made of grasses and plant fibres. Bird did not leave nest until touched
with the hand.

660. BAY-BREASTED WARBLER. _Dendroica castanea._

Range.--North America, east of the Plains, breeding from northern United
States north to the Hudson Bay; winters in Central and South America.

This species has the crown, throat and sides a rich chestnut; forehead
and face black; underparts white. They nest in coniferous trees in
swampy places, making their nests of bark shreds and rootlets and
placing them in horizontal forks at elevations of from five to thirty
feet from the ground. The three or four eggs are laid late in May or
during June; they are white, usually quite heavily spotted and blotched
with reddish brown, umber and grayish. Size .70 x .50.

[Illustration 400: Chestnut-sided Warblers. Bay-breasted Warblers.]
[Illustration: White.]
[Illustration: White.]
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661. BLACK-POLL WARBLER. _Dendroica striata._

Range.--North America, east of the Rockies, breeding from northern
United States north to Labrador and Alaska; winters in S