178 
C II E S X N U T- S I D E D W A R BLE R. 
the bay color on the breast; the black on the forehead is also less 
and of a brownish tint. The legs and feet, in both, are dark ash, the 
claws extremely sharp for climbing and hanging ; the bill is black ; 
irides hazel. 
The ornithologists of Europe take no notice of this species, and have 
probably never met with it. Indeed it is so seldom seen in this part of 
Pennsylvania that few even of our own writers have mentioned it. 
I lately received a very neat drawing of this bird, done by a young 
lady in Middleton, Connecticut, where it seems also to be a rare species. 
Species IX. SYLVIA PEKNS YL YA NIC A . 
CHESTNUT-SIDED WARBLER. 
[Plate XIV. Fig. 5.] 
Linn. Syst. 333. — Rcd-throa/cd Flycatcher, Edw 301. — Bloody-side War/In; Tur- 
ton, Syst. i., p. 59f>. — La Jignier 0, poitrine rouge, Buff, v., 308. — Bitiss. App 
105.— Lath, ir., 490.— Arct. Zoul. p. 405, No. 298* 
Of this bird I can give but little account. It is one of those tran- 
sient visitors that pass through Pennsylvania in April and May, on 
their way farther north to breed. During its stay here, which seldom 
exceeds a Meek or ten days, it appears actively engaged among the 
opening buds and young leaves, in search of insects ; has no song but a 
n feeble chirp or twitter ; and is not numerous. As it leaves us early in 
May, it probably breeds in Canada, or perhaps some parts of New Eng- 
land ; though I have no certain knowledge of the fact. In a whole 
day's excursion it is rare to meet with more than one or two of these 
birds ; though a thousand individuals of some species may be seen in 
the same time. Perhaps they may be more numerous on some other 
part of the continent. 
The length of this species is five inches, the extent seven and three 
quarters. The front, line over the eye, and ear feathers are pure white, 
upper part of the head brilliant yellow ; the lores, and space immedi- 
ately below, are marked with a triangular patch of black ; the back and 
hind head is streaked with gray, dusk;y, black and dull yellow ; wings 
* Additional synonymes: — Muia<-illa icterocephala, Linn. Sysf. i., p. 325. — Gmel. 
St/st. i., p. 980,.— Sylvia icier ocephala, Lath. Ind. Out. n., p. 538.— Yieil. Ois. de 
VAm. Sept.pl. DO. — Sylvia Pennsylvanica, Gmel. Syst. i., p. 971. — Lath. hid. Orn. 
n., p. 540. — Ficedula Canadensis icterocephalas, Briss. in., p. 517, 04, t. 27, f. 2. — 
Id. 8vo., i., p. 451. — Ficedula Pennsylvanica iclerocephalas, Briss. App p. 105. — 
Id. 8vo., i., p. 458, 78. 
