Concord, Mass.
1902.
Oct 2
  A clear morning at last followed by a sunny but
partly cloudy, calm and oppressively sultry day.
  At Ball's Hill in the early morning a Song Sparrow
was singing and a Kingfisher sounding his rattle. Bluebirds
were passing high overhead in different directions every little
while uttering their sad call notes and occasionally warbling.
Usually there were six or seven together and with them 
occasionally two or three much smaller birds which I took
to be Blackpoll Warblers but which may have been either
Yellow-rumps or Chippies.
Birds at Ball's Hill in early morning.
Bluebirds & Black-polls (?) flying in company.
  I paddled down river to Birch Island at 8.30 A.M.
seeing no water fowl of any kind but hearing a Meadow Lark
singing faintly & brokenly somewhere in the pastures on the
W. Bedford shore.
  On my way to the farm I heard Bluebirds &
Black-polls almost continuously and every now & then
a gaudy Blue Jay flashed across the path. Near Pulpit
Rock I came on a mixed flock containing besides the 
usual Chickadees & Black-polls a Downy and two
Solitary Vireos one of which made all manner of low, tender
musical calls and once burst suddenly into full song
keeping it up for nearly a minute.
Abundance of Bluebirds & Black-polls.
 Solitary Vireos.
  As I was watching the Vireos I suddenly heard
the barking kek; kek; keh-heh-heh-heh-heh
of a Cooper's Hawk. The bird was evidently within thirty
or forty yards but he kept so closely concealed among
the dense white pines that I did not get a sight
at him. He repeated his outcry three or four times within
the next ten minutes. I do not think that I have
ever heard it before in the autumn. It was precisely
Cooper's Hawk cackling in autumn.
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