Glendale, Berkshire Co., Mass.
1906.
July 3
(No 2)
on the wires were falling over and showed the rich
reddish brown or fulvous markings of the throat and upper 
part of the breast, which are so characteristic of the young
of S. serripennis, with perfect distinctness. The only sound
they made was a gutteral glur not unlike that of the
adult Eave Swallow. Their plumage was wholly free from
down and their wings and tails appeared to be of full
length. Although from the first I had entertained no
doubts as to the identity of the two old birds I
was glad of the opportunity which presently occurred to
directly compare them with a number of adult
Bank Swallows which were flying about over a
sheltered stretch of river just above the bridge. As the
Rough-wings mingled with them for a minute the
differences in size, color and markings between the two
species was very noticeable. The Rough-wings looked 
a third larger and very much browner than the
Bank Swallows while they showed no trace of the dark
pectoral collar so conspicuous in the latter species.
Their flight was also different being slower, heavier
and more direct. I had them under observation
for upwards of ten minutes and at times they 
passed me within a few yards. As I have been
long familiar with the appearance of the species in
life there can be no question as to the correctness
of my identification of these particular birds: The
young must have been out of the nest for a week
or more. None of the Bank Swallows appeared to
have young in the immediate neighborhood. I did
not hear the adult Rough-wings utter any sound.