374 
INSECTIVOROUS BIRDS. 
Tail emarginate, exteriorly edged with olive-yellow. — In th e female, 
the throat and breast are yellow, only slightly tinged with blackish; 
the black does not reach so far down the upper part of the neck, and 
is less deep. The young ? have little or no black on the head or neck 
above. 
YELLOW-THROATED GREY WARBLER. 
( Sylvia pensilis , Lath. Audubon, pi. 85. Orn. Biog. i. p. 434. 
S> flavicollisy Wilson, ii. p. 64. pi. 12. fig. 6.) 
Sp. Charact. — Bluish-grey; frontlet, ear-feathers, lores, and a 
space above the eyes, black ; throat and breast yellow ; belly and 
line over the eye white ; sides spotted with black ; wings and 
tail black, varied with white. — Female duller colored ; the young 
without the yellow and black marks. 
This elegant and remarkable species resides in the 
West Indies, and also migrates in considerable num- 
bers into the southern parts of the United States, partic- 
ularly Louisiana, from whence indeed they only absent 
themselves in the two inclement months of December 
and January. They are seen in February in Georgia, 
but very rarely venture as far north as Pennsylvania. 
Their song is pretty loud and agreeable, according to 
Wilson, resembling somewhat the notes of the Indigo 
bird. In the tropical countries it inhabits, this delicate 
music is continued nearly throughout the year, and par- 
ticipated also by the female, though possessed of inferior 
vocal powers. It appears to have many of the habits 
of the Creeping Warbler (S. varia), running spirally 
around the trunks of the Pine trees, on which it alights, 
and ascending or descending in the active search of its 
insect fare. 
The sagacity displayed by this bird in the construction 
and situation of its nest is very remarkable. They are 
