1892.
July 25
(No 2)
Concord, Massachusetts.
Mass.
Concord.- several times.
    I had begun to fear that the Wood Thrushes were
going to disappoint me when (at 7.30) the[delete]y[/delete] two which, up
to this time, had been apparently merely rehearsing burst
suddenly into full song. In a moment others took up the
strain until five were singing at once. My companion,
inexperienced in such matters, insisted that there were
at least a dozen, a delusion natural enough under the
circumstances for these birds, as is their habit at such
times, kept flitting restlessly from place to place so
that in the course of a minute or two their notes
did actually come from at least a dozen different
points. The effect was impressive beyond my powers
of description. I have heard nothing to equal it before
even in these woods for not only were the singers more
numerous this evening than on previous occasions but
at the height of their concert they literally had the
whole field to themselves not a single note of any other
species of bird being heard for the space of ten minutes
or more.
[margin]Evening walk to Clark's woods.[/margin]
[margin]Concert of√√[tick marks]
Wood Thrushes[/margin]
  The first Whippoorwill sang at 7.35. I heard it
only a few times after this.

  As I was walking home after darkness had
fairly set in a Warbler of some species passed over
lisping. This is the first migrant that I have
heard at night with the possible exception of
the Grosbeak at North Billerica on the evening
of the 23rd.
[margin]Warbler migrating[/margin]