Concord, Mass.
1897
April
No 1                                                                      
  Turdus pallasii. - I did not meet with a single bird but
W. Bartlett saw one in Sleepy Hollow, April 17.
(Faxon has seen only one in Belmont - Arlington region)
  Merula migratoria. A year or two ago I noted what seemed 
to be a small spring Robin roost in some dense
young pines on the N.E. side of Ball's Hill. This 
season I have seen the birds there on only an 
occasion viz. April 26th when between sunset & dark
a dozen or more came in from different directions
but chiefly from the S. & S. W. I think they were
all male for nearly if not quite every one sang for
a few minutes just before dark making a fine
chorus. A strong & exceedingly chilly S.W. wind was
blowing this evening and they doubtless sought
shelter from it among these pines under the lea of
the high ridge. Robins have been scarcer than usual
at Concord this spring. 
  Harporhynchus rufus. The first birds turn out Ball's Hill
April 25th Song heard that morning. By April 30th
four birds were established, one opposite the cabin
on the W. Bedford Shore, two opposite Davis's Hill,
one above Bensen's house, none on any part of my
land. One of the birds opposite Davis's Hill regularly
 and at frequent intervals interpolated in his song
the full call (four whistles) of Totanus melanoleucus
imitating them exactly. Thrice, also, I heard him
give the bob - white of the Quail. I have never before
heard a Thrasher mock any other bird. This 
Thrasher was a remarkably fine singer.