Cambridge, Mass.
1908
Sept. 9
  Brilliantly clear with light W. wind. Warmer.
  H. A. Purdie came out this morning to see the
Carolina Wrens. We soon found them among the rank
herbaceous growth in the north west corner of the Garden.
I drove them out past the Museum to the lilacs where
they remained most of the forenoon. Although less noisy
than they were yesterday forenoon they called or scolded 
at intervals and twice the male sang a few times.
At daybreak this morning I heard the te-e-e-er call
thrice. Last evening they went to roost among the
rhododendrons in the angle of the Museum wall just as 
twilight was falling. Before settling themselves for the
night both birds scolded loudly and incessantly for
two or three minutes. While listening to them it
suddenly struck me that their chattering cries which
I have compared to those of the House Wren were
really quite different and much more nearly like
(at least in quantity) the rasping notes of the Katydid.
Purdie, who has been hearing many Katydids of late,
agreed heartily to this comparison when we were 
listening to the scolding of the Wrens this morning.
Both birds continue retiring and elusive. One may
approach them closely enough but they are past masters
of the art of hiding and skulking in undergrowth
and old woodpiles (such as that near our tool house).
Hence it is difficult to get a good view of them.
They responded quickly and satisfactorily to "screeping" the
first day but since then they have paid little or
no attention to it.
Carolina Wrens in the Garden
Scolding notes like sounds made by Katydid