Nests in Trees, Bushes, or Vines 
659. Chestnut-sided Warbler: Dendroica pennsylvanica 
(Linn.) 
Aduit—Upper parts greenish, streaked with black ; crown yellow; 
a black line from base of bill on sides of throat to upper part 
of breast, where it joins the chestnut patch on either side of the 
breast and belly; rest of under parts whitish. Length—5.14. 
Breeding Range—In the Alleghanies, northward from South Caro- 
lina, and from northern New Jersey and Illinois northward. 
The nest is placed in low bushes at a height from eighteen 
inches up to seven or eight feet. It is a fairly compact nest, about 
an inch and a half deep inside, composed of grass, thin strips of 
bark, a small amount of plant fibre, and lined with fine grass, 
hair, and hair-like roots. Seldom more than 4 eggs are laid; they 
are white, with light reddish-brown and pale lavender spots, most 
of which form an irregular wreath round the larger end. Size— 
.68 x .50. See Fig. 15, Plate D. 
The Chestnut-sided Warbler arrives at the southern portion 
of his lowland range (New Jersey) about the first week in May, 
and he and his mate, who lacks but little of the brilliancy of his 
colouring, choose some suitable place, such as the scrubby second 
growth of a clearing, or near a brook where the underbrush is 
thick, and there they remain until time for nest-building, which 
begins about the last week in May. During this period and for 
about a month or so after, the sweet note of the male bird may 
be heard at almost any time of day. While his mate is perform- 
ing the tedious duty of incubating, he remains near by and sings 
at frequent intervals. The accompanying photograph was taken 
in South Orange, New Jersey, the nest being placed within eigh- 
teen inches of the ground, in an azalea plant. 
660. Bay-breasted Warbler: Dendroica castanea 
(Wils.) 
Adult £—Upper parts ashy gray or brownish, streaked with 
black ; crown chestnut ; forehead and cheeks black ; two 
white wing bars ; tail tipped broadly with white. Under 
parts, throat, breast, and sides reddish chestnut ; lower part 
of breast and belly white. 
Adult 2 —Less brilliant and with less chestnut, especially on the 
crown, which is a mixture of greenish and rufous. Length 
—5.63. 
159 
