14 JUNE IN FRANCONIA. 
and I were perfectly agreed while we had 
the bird before us, and Mr. Brewster’s tes- 
timony is abundantly conclusive to the same 
effect. He was in the Umbagog forests on 
a special hunt for Philadelphia vireos (he 
had collected specimens there on two previ- 
ous occasions), and after some days of fruit- 
less search discovered, almost by accident, 
that the birds had all the while been singing 
close about him, but in every instance had 
passed for “nothing but red-eyes.”’! 
For the benefit of the lay reader, I ought, 
perhaps, to have explained before this that 
the Philadelphia vireo is in coloration an ex- 
act copy of the warbling vireo. There is a 
slight difference in size between the two, 
but the most practiced eye could not be de- 
pended upon to tell them apart in a tree. 
Vireo philadelphicus is in a peculiar case: 
it looks like one common bird, and sings 
like another. It might have been invented 
on purpose to circumvent collectors, as the 
Almighty has been supposed by some to 
have created fossils on purpose to deceive 
ungodly geologists. It is not surprising, 
therefore, that the bird escaped the notice 
1 Bulletin of the Nuttall Ornithological Club, vol. v. p. 3. 
