408 
INSECTIVOROUS BIRDS. 
This very delicately colored species is among the 
rarest summer residents of the Atlantic states, and does 
not probably migrate or rather stray farther north than 
the state of New York. In the Southwestern states, 
particularly Tennessee and West Florida, it is one of 
the most abundant species ; it is also found in the West- 
ern wilderness beyond the Mississippi. Its nest, how- 
ever, and manners at the interesting period of incuba- 
tion, are unknown. It is only in the summer that it ever 
ventures into the Middle States, from which it retires 
almost before the first chills of autumn, or by the middle of 
August. It frequents the borders of streams and marshes, 
and possesses many of the habits of the Flycatchers, 
warbling also at times in an under tone like that of the 
following species. 
Length 4J inches ; alar extent 7J. Afcove verditer blue (in Audu- 
bon azure) with a few streaks of black on the upper part of the back. 
Wings and tail black, edged with pale blue. Tail forked, a white 
spot in the 5 lateral feathers on each side ; the 2 middle more slightly 
marked with the same. From the eye backwards a line of dusky 
blue. Bill dusky above, light blue below. Legs and feet light blue. 
- — Female, with the sides of the breast spotted or streaked with dusky 
bluish. 
GREEN BLACK-CAPT WARBLER. 
i- 
( Sylvia Wiisonii, Bonap. Muscicapa pusilla, Wilsojy, iii. p. 103. pi. 
26. fig. 4. Phil. Museum, No. 7785.) 
8p. Charact. — Olive-green ; crown black ; front, line over the 
eye, and all beneath, yellow ; tail rounded. — Female without the 
black crown, and dull yellow olive. 
This rare species inhabits the swamps of the Southern 
States, and is occasionally seen in the lower parts of the 
states of New Jersey and Delaware. It keeps mostly in 
the deepest swampy thickets, and has a sharp squeaking 
note no way musical. It leaves the Southern States early 
in October. 
