200 Dwicut, The Philadelphia Vireo. ae 
Costa Rica, and during the migration ranges over the eastern 
United States, being most abundant in the Mississippi Valley. 
Its breeding range probably covers a large part of Canada east 
of the Rocky Mountains and a few adjacent portions of the 
northernmost United States. Breeding specimens have been 
recorded from New Brunswick (Edmundston), Quebec (near 
Ottawa), Ontario (Moose Factory), Manitoba (Winnipeg), and 
Assiniboia (Fort Pelly), the last the westernmost record; also 
from Maine (Lake Umbagog), New Hampshire (White Moun- 
tains), Indiana (Carroll County), Illinois (Chicago), Minnesota 
and Dakota (Red River Valley), and Nebraska (Lincoln), the last 
the westernmost record in the United States. There is at present 
no good evidence of the occurrence of the species, except as a 
migrant, in Michigan, Wisconsin, and Iowa, where it is to be 
expected, for it has been recorded as breeding in the adjacent 
States. Numerous other records need hardly occupy space here 
for they have received ample treatment elsewhere and have 
served me only as a basis on which to build the brief summary 
of facts here presented. 
Mr. Brewster was the first to acquaint us with the social side of 
the Philadelphia Vireo, and it is largely from this point of view 
that I now wish to consider these modest little birds, dragging them 
again before the public after they have conducted their domestic 
affairs quite undisturbed for the last sixteen years. I feel on 
terms of considerable intimacy with them for I have cultivated 
their acquaintance during portions of four summers spent among 
them near the little village of Tadousac, Province of Quebec, 
Canada, where I have found them to be rather common. My 
experience with them has been very much like Mr. Brewster's 
and consequently my remarks must of necessity be somewhat in 
the nature of a postscript to his graphically penned observations. 
It was on the roth of July, 1893, that a Philadelphia Vireo 
introduced herself to notice by scolding me most unceremoniously, 
—at least I took it to be a female and one just off the nest, from 
the way she kept ruffling and picking at her feathers and shaking 
herself as many birds do when disturbed from their eggs. Still, 
no nest could be found, nor was my lady anywhere about at later 
visits to the same spot. However, profiting by the fact that I had 
