162 
SYLVIA AUTUMNALIS. 
to appear wholly of that tint ; immediately below the 
primary coverts, there is a single triangular spot of 
yellowish white ; no other part of the wings is white ; 
the three exterior tail-feathers, with a spot of white on 
their inner vanes ; the tail is slightly forked ; from the 
nostrils over the eye, extends a fine line of white, and 
the lower eyelid is touched with the same tint ; lores, 
blackish ; sides of the neck and auriculars, green olive ; 
whole lower parts, pale yellow ochre, with a tinge of 
greenish ; duskiest on the throat ; legs, long and flesh 
coloured. 
The plumage of the female differs in nothing from 
that of the male. 
ISO. SYLVIA AUTUMNALIS , WILSON. — AUTUMNAL WARBLER. 
WILSON, PLATE XXIII. FIG. IV. 
This plain little species regularly visits Pennsylvania 
from the north in the month of October, gleaning 
among the willow leaves ; but, what is singular, is 
rarely seen in spring. From the 1st to the 15th of 
October, they may be seen in considerable numbers, 
almost every day, in gardens, particularly among the 
branches of the weeping willow, and seem exceedingly 
industrious. They have some resemblance, in colour, 
to the pine-creeping warbler ; but do not run along the 
trunk like that bird, neither do they give a preference 
to the pines. They are also less. After the first of 
November, they are no longer to be found, unless the 
season be uncommonly mild. These birds, doubtless, 
pass through Pennsylvania in spring, on their way to 
the north ; but either make a very hasty journey, or 
frequent the tops of the tallest trees, for I have never 
yet met with one of them in that season, though, in 
October, I have seen more than a hundred in an after- 
noon’s excursion. 
Length, four inches and three quarters ; breadth, 
eight inches ; whole upper parts, olive green, streaked 
on the back with dusky stripes ; tail-coverts, ash, tipt 
with olive : tail, black, edsred with dull white : the 
