1892
July 14
(No 3)
Concord, Massachusetts.
Mass
Concord.  -  that the bird's well known notes really
constitute a song despite the fact that they are uttered
by both sexes, as well as in modified form, by
young? I think the Black-bill sings (or calls) a little
later in the season then the Yellow-Bill.
  Barn Swallows were numerous along the river to-day [margin]Barn Swallows[/margin]
but most of them were flying and I think the young
are now getting their own lining for I saw only three
or four single birds perched. At least this was the case
in the morning but at evening, a little before sunset,
fully thirty were assembled in one time, a black willow
opposite the swimming place. There used to be a
roost in this tree years ago (1886 or 87) and I think
that the birds which I saw there to-night were
preparing to go to roost although I was unable to
watch them long enough to settle the point.
  I see Bank Swallows in about the same numbers 
as during the past month but no young birds
have appeared yet and there is no indication of
flocking on the part of the old.
[margin]Bank Swallows[/margin]
  A flock of fully 40 Ean Swallows passed over the 
Buttrick's house this evening some time after sunset.
They were rather high up and were moving towards
the S[outh] W[est]. So far as I could make out there was
not a single Swallow of any other species with them.
I do not think that they were migrating. Probably
it was merely a flight to the roost. By the way
where & how do Ean Swallows roost? Investigate this!
[margin]Ean Swallows flocking[/margin]