258 
BLUE-EYED YELLOW WARBLER. 
of Pennant and Buffon ; the only difference I can perceive* 
on comparing specimens of each, is, that the yellow of the 
Prothonotary is more of an orange tint, and the bird somewhat 
larger. 
BLUE-EYED YELLOW WARBLER SYLVIA CITRINELLA. 
Plate XV. Fig. 6. 
Yellow-poll Warbler, Lath. Syn. vol. ii. No. 148 Arst. Zool. p. 402. No. 292 
Le Figuier tacbete, Buff. Ois. v. p. 285. — Motacilla sestiva, Burton's Syst. 
p. 615 Parus lufceus, Summer Yellow Bird, JBartram, p. 292. — Peak's Museum, 
No. 7266. 
SYLVICOLA JESTIVA.— Swainson. 
Sylvia sestiva, Bonap. Synop. p. 83 Sylvicola sestiva, North. Zool. ii. p. 212. 
This is a very common summer species, and appears almost 
always actively employed among the leaves and blossoms of 
the willows, snow-ball shrub, and poplars, searching after small 
green caterpillars, which are its principal food. It has a few 
shrill notes, uttered with emphasis, but not deserving the name 
of song. It arrives in Pennsylvania about the beginning of 
May, and departs again for the south about the middle of 
September. According to Latham, it is numerous in Guiana, 
and is also found in Canada. It is a very sprightly, unsus- 
picious, and familiar little bird ; is often seen in and about 
gardens, among the blossoms of fruit trees and shrubberies; 
and, on account of its colour, is very noticeable. Its nest is 
built with great neatness, generally in the triangular fork of a 
small shrub, near or among brier bushes. Outwardly it is 
composed of flax or tow, in thick circular layers, strongly 
twisted round the twigs that rise through its sides, and lined 
wflthin with hair and the soft downy substance from the stalks of 
fern. The eggs are four or five, of a dull white, thickly 
sprinkled near the great end with specks of pale brown. They 
raise two broods in the season. This little bird, like many 
