* 
142 Mr. Peabody on the 
eastern parts of Maine and the British Provinces, 
where it builds and rears its young; but it is not 
ascertained that any one has yet been discovered here. 
Roscor’s Yetiow-rHroat, Sylvia Roscoe, so much 
resembles the Maryland Yellow-throat, that Audu- 
bon, the discoverer, at first thought it only an acci- 
dental variety of that species. Nuttall says that it 
is seen in Massachusetts at the close of summer, and 
his impression is that it breeds here. 
Before leaving the subject of warblers, I may be 
permitted to say how much we are under obligation 
to them; not asa plea in their behalf, since their 
diminutive size protects them. They are too small 
to be valued for food, or to afford the requisite de- 
gree of excitement to the sportsman. We are told 
by travellers, that the scenery of Spain seems life- 
less and heavy, from the want of singing birds ; 
ours, on the contrary, is animated with the voices 
and lighted up with the plumage of these little 
birds, most of which are as beautiful in colors as they 
are sweet in their song. From a circumstance men- 
tioned by Audubon, one can easily estimate the im- 
portance of their services. He says that he found 
more than fifty insects in the crops of only two 0 
them. Millions remain in the United States through- 
out the summer, and those which pass through the 
country, arrive precisely at the season when insects 
are springing into life and action ; so that the visit of 
two or three weeks, which they make with us at 
that time, is as valuable to us as ten times the same 
amount of labor at any other part of the year. 
