382 
INSECTIVOROUS BIRDS. 
a triangular patch of black beneath the eye and connected with the 
lores y hind-head grey and black ; feathers of the back and rump 
black, edged with greenish yellow. Wings dusky, the primaries edg- 
ed with whitish ; the 1st and 2d row of coverts broadly tipt with 
pale yellow ; the secondaries edged with greenish yellow. Tail 
forked, dusky exteriorly, edged with ash or with greenish-grey. 
Sides from the black beneath the eye to the thighs, furnished with a 
broad stripe of bright chesnut, the rest of the parts below pure white. 
Legs and feet dusky. Bill black. Iris hazel. 
BAY-BREASTED WARBLER. 
(Sylvia castanea , Wilson, ii, p. 97. pi. 14. fig. 4. Audubon, pL 69. 
Orn. Biog. i. p. 358. Phil. Museum, No. 7311.) 
Sp. Charact. - — Forehead and cheeks black; crown, throat, and 
sides under the wings, bay ; the wings with 2 white bars ; 3 lat- 
eral tail-feathers marked with white. — The female with less and 
paler bay on the breast, and less black on the head. 
This is a still rarer and more transient visitor than the 
last. It arrives in Pennsylvania from the South some time 
in April, or about the beginning of May, and towards the 
12th or 15th of the same month it visits Massachusetts, 
but seldom stays more than a week or ten ten days, and 
is very rarely seen on its return in autumn. Audubon 
once observed these birds in Louisiana late in June, so 
that they probably sometimes breed in very secluded 
places, without regularly proceeding to the Northern 
regions. It is an active insect-hunter, and keeps much 
towards the tops of the highest trees, where it darts 
about with great activity and hangs from the twigs with 
fluttering wings. One of these birds, which was wound- 
ed in the wing, soon became reconciled to confinement, 
and greedily caught at and devoured the flies which I 
offered him ; but from the extent of the injury, he did 
not long survive. In habits and manners, as well as 
markings, this species greatly resembles the preced- 
ing. 
