1893
April 26
Concord, Mass.
( Ball's Head)
  Cloudless, high N. W. wind in A.M calm in P.M. A
rare day very like a late autumn day. Last night was 
exceptionally cold for this season the ther 22 [degrees] at sunrise.
  C. came to Concord by the 10 A.M. train and we
drove about near town for an hour or more.
  After dinner we rowed down river to Ball's Hill
where we walked over to Davis Swamp Knoll and
back by Bensen's field. Both here and along the 
river we saw remarkably few birds and there 
was practically no singing. The greater part of the 
Yellow Palm and Yellow-rump Warblers that were
here yesterday appear to have passed on during 
last night but a good many scattered birds remained.
The Yellow rumps being decidedly the more numerous 
of the two to-day.
  George brought Charlie &[and] the buggy to Ball's Hill at
4.30 and C. & I drove back to the Buttricks'. As we
passed Bensen's house a Carolina Dove was cooing in 
the top of his large elm.
  Both the Coopers' Hawks were in the pines by the
glacial hollow this afternoon. In addition to the 
cries which  I have recently attempted to describe (ie
the mew, the bark and the kek cackle) one of them
made a sound almost exactly like the murmuring 
call of the Muskrat but perhaps a little louder and
more penetrating. This I have heard once before
- in April 1890 I think - when I shot the bird in 
the act of calling on the river edge of Lawrence's woods.
(These Hawks were not seen here after this date. They were probably 
frightened away by one of my men who cut down several trees on the 27th)
[margin]Cooper's Hawks [/margin].  