102 
THE NATURALIST’S GUIDE. 
feet in form ; measures .67 X .55, and is pure white, spotted 
and blotched with reddish brown, thickly at the larger and 
sparsely at the smaller ends. No. 2, also perfect ; measures 
.66 X .55 ; is spotted at the larger end, but not as thickly 
as No. 1 ; very sparsely at the smaller end. No. 3, per- 
fect ; measures .66 X .55; but few spots on the larger 
end compared with the others ; the spots on the smaller 
end are few and scarcely perceptible. No. 4 is not so per- 
fect in form, being smaller in the middle; measures .67 X 
.50 ; the spots on the larger end form an irregular ring 
around a comparatively clear centre ; the egg is but little 
spotted elsewhere. There was also a Cow-Bunting’s egg in 
the nest.” ^ 
It is a strange fact that among all the birds of this 
species I have seen, I have never met with a female be- 
fore. I will here give a short description, as compared 
with the plumage of the male, of the one which I shot, as 
it differs from that given by others. The yellow on the 
wings is as bright as in the male, and that of the crown 
nearly as bright. Not as much white on the tail. The 
throat and cheeks, black in the male, are in this case slate. 
The middle of the back, which, in the perfectly mature 
male, — with which this should be compared, as it is evi- 
dently a perfectly mature female, — is of a beautiful pearl 
gray, in this case is strongly tinged with the greenish 
shade seen in young males. The under parts are yellow- 
ish instead of a clear white. 
I have invariably found this Warbler in swampy places, 
generally on the edges of woods. 
34. Dendrceca virens, Baird. — Black-throated Green 
Warbler, Abundant during the migrations ; but breeds 
commonly. Arrives from April 30th to May 19th; de- 
parts in September. Found everywhere in the woods, but 
generally among pine-trees. 
* “ The nest is rare, although I have seen half a dozen altogether.” — 
Professor S. F. Baird, in Epist. 
