1892
Sept.7
(No 3)
Concord, Massachusetts.

Mass
Concord. but almost completely drained of such summer
residents as habitually migrate before this date while few birds
from further north have appeared in their places although
there have been many good flights overhead during forseeable
nights. In other words the migrations thus far have
drawn heavily on our summer residents without fringing
anything of much consequence to compensate for their loss.
It is difficult to account for this in view of the fact
that during many nights hosts of Warblers etc. have
been passing over us but perhaps none or few of them
came from, sufficiently distant points to tarry in this
latitude; or the exceptionally fine weather may have tempted
them to push on more rapidly and by longer stages than
usual. Be this as it may the facts are as just stated.
  But this morning witnessed as great change, for the 
country was simply flooded with small birds and it
was evident that a very heavy flight had arrived during
the night. Everywhere that I went the thickets, swamps,
oak and pine woods were alive with Warblers, Sparrows
etc. flitting about singly, in small parties, and in
unified flocks of considerable size. In a comparatively
limited space I identified upwards of ten species which
I have not hitherto seen at all this month and
most of the species which have been on my
lot were greatly augmented in respect to the 
numbers of individuals.
[margin] Arrival of a great Bird-wave[/margin]

  At first - up to 10 a.m. perhaps - many of them
little strangers showed great restlessness flying continually
from place to place & sometimes rising high in air by
spiral courses as if tempted to resume their journey