260 
BLACK-THROATED BLUE WARBLER. 
form. The habits of these birds partake a good deal of those 
of the Titmouse ; and, in their language and action, they very 
much resemble them. All that can be said of this species is, 
that it appears in Pennsylvania for a few days, about the last 
of April or beginning of May, darting actively among the 
young leaves and opening buds, and is rather a scarce species. 
The Golden-winged Warbler is five inches long, and seven 
broad ; the crown, golden yellow ; the first and second row of 
wing-coverts, of the same rich yellow ; the rest of the upper 
parts, a deep ash, or dark slate colour ; tail, slightly forked, 
and, as well as the wings, edged with whitish ; a black band 
passes through the eye, and is separated from the yellow of 
the crown by a fine line of white; chin and throat, black, 
between which and that passing through the eye runs a strip 
of white, as in the figure ; belly and vent, white ; bill, black, 
gradually tapering to a sharp point; legs, dark ash; irides, 
hazel. 
Pennant has described this species twice, first, as the 
Golden-winged Warbler, and, immediately after, as the 
Yellow-fronted Warbler. See the synonyms at the beginning 
of this article. 
BLACK-THROATED BLUE WARBLER SYLVIA 
CANADENSIS Plate XV. Fig. 7. 
Motacilla Canadensis, Linn. Syst. 336. — Le Figuier bleu, Stiff, v. 304. PI. enl. 
685. fig. 2 Lath. Syn. ii. p. 487, No. 113. — Edw. 252 Arct. Zool. p. 399, 
No. 285 Peale's Museum, No. 7222. 
SYLVICOLA CANADENSIS. — Swainson. 
Sylvia Canadensis, Sonap. Synop. p. 84. 
I know little of this bird. It is one of those transient 
visitors that, in the month of April, pass through Pennsylvania, 
on its way to the north, to breed. It has much of the Flycatcher 
in its manners, though the form of its bill is decisively that 
<©f the Warbler. These birds are occasionally seen for about 
