BAY-BREASTED WARBLER, 
177 
broad ; the 'whole hack, hind head and rump is a fine light slate color ; 
the tail is somewhat forked, black, and edged with light slate ; the wings 
are also black, the three shortest secondaries broadly edged with light 
blue ; all tire wing quills are slightly edged with the same ; the first row 
of wing coverts are tipped and edged with white, the second wholly 
white, or nearly so ; the frontlet, ear feathers, lores, and above the tem- 
ple, are black ; the line between the eye and nostril, whole throat and 
middle of the breast brilliant golden yellow ; the lower eyelid, line 
over the eye, and spot behind the ear feathers, as well as the whole 
lower parts, are pure white ; the yellow on the throat is bordered 
with touches of black, which also extend along the sides under the 
wings ; the bill is black, and faithfully represented in the figure ; the 
legs and feet yellowish brown ; the claws extremely fine pointed ; the 
tongue rather cartilaginous, and lacerated at the end. The female has 
the wings of a dingy brown, and the whole colors, particularly the yel- 
low on the throat, much duller ; the young birds of the first season are 
without the yellow. 
Species VIII. STL VIA CASTANEA. 
BAY-BREASTED WARBLER. 
[Plate XIV. Fig. 4.] 
Parus peregrinus, the Utile Chocolate-breasted Titmouse, Baktram, p. 292. 
Tins very rare species passes through Pennsylvania about the begin- 
ning of May, and soon disappears. It has many of the habits of the 
Titmouse, and all their activity ; hanging among the extremity of the 
twigs, and darting about from place to place, with restless diligence, in 
search of various kinds of the larvae of insects. It is never seen here 
in summer, and very rarely on its return, owing, no doubt, to the 
greater abundance of foliage at that time, and to the silence and 
real scarcity of the species. Of its nest and eggs we are altogether 
uninformed. 
The length of this bird is five inches, breadth eleven ; throat, breast, 
and sides under the wings, pale chestnut or bay; forehead, cheeks, line 
over, and strip through the eye, black ; crown deep chestnut ; lower 
parts dull yellowish white ; hind head and back streaked with black on a 
grayish buff ground ; wings brownish black, crossed with two bars of white ; 
tail forked, brownish black, edged with ash, the three exterior feathers 
marked with a spot of white on their inner edges ; behind the eye is a 
broad oblong spot of yellowish white. The female has much less of 
Vol. II.— 12 
