142 
THE YELLOW-THROATED YIREO. 
in Pennsylvania and New Jersey about the end of April, and in Massachu- 
setts and Maine about a month later. 
The nest of the Yellow-throated Yireo is truly a beautiful fabric. It 
sometimes extends to five or six inches in depth, and as it is always placed 
at the extremity of small twigs, it is very conspicuous. It is attached to 
these twigs with much care by slender threads of vines, or those of other 
trees at its upper edges, mixed with the silk of different caterpillars, and 
enclosed with lichens, so neatly attached by means of saliva, that the whole 
outer surface seems formed of them, while the inner bed, which is' about 
two and a half inches in diameter, by an inch and a half in depth, is lined 
with delicate grasses, between which and the bottom coarser materials are 
employed to fill the space, such as bits of hornets’ nests, dry leaves, and 
wool. The eggs, which are four or five in number, are of an elongated form, 
white, spotted with reddish-brown or black. The young are out about the 
beginning of July. In Maine it raises one brood only, but farther south 
not unfrequently two. 
Yellow-throated Flycatcher, Muscicapa sylvicola, Wils. Amer. Orn., vol.ii.p. 11 7. 
Yireo flavifrons, Bonap. Syn., p. 10. 
Yellow-throated Vireo, Nutt. Man., vol. i. p. 302. 
Yellow-throated Flycatcher or Yireo, Vireo flavifrons , Aud. Orn. Biog., vol. 
ii. p. 119 ; vol. v. p. 428. 
Male. 
Upper parts light green, the rump, scapulars, and smaller wing-coverts 
bluish-grey ; quills and coverts brownish-black ; two bands of white on the 
wing, formed by the tips of the secondary coverts and first row of small 
coverts ; primaries narrower, edged with yellowish-green, secondaries 
broadly with white ; tail-feathers brownish-black, the outer edged with 
white; sides of the neck yellowish-green ; a line over the eye, throat, and 
breast yellow, the rest of the lower parts white. 
Male, 5|, 9i. 
From Texas to Nova Scotia. Rare in the interior, more abundant in the 
middle Atlantic districts. Migratory. 
The egg of this bird measures thirteen-sixteenths of an inch in length, by 
five-eighths, is of a slightly elongated form, oval, from the smaller end being 
rather rounded, and is marked with a few scattered spots of a deep brown- 
ish-crimson, on a beautiful flesh-coloured ground. 
In a male preserved in spirits, the roof of the mouth is slightly concave, 
with two palatal ridges, and an anterior median ridge ; the posterior aperture 
of the nares is linear-oblong, 5 twelfths in length, its margins papillate. The 
tongue is rather short, twelfths long, narrow, triangular, very thin, 
