Concord, Mass.
1909.
March 27
(No 2)
  About ten minutes after the Red-shouldered Hawks
passed over me another Hawk, of still greater size, apparently,
followed them flying at about the same height in 
nearly the same direction and in a precisely similar
manner. It was shaped like a Cooper's Hawk and when
I first noticed it at a distance, advancing from the eastward,
I took it for a female of that species; but when it came
overhead I saw that it was much too large for a Cooper's.
Its wings looked short and broad, its body bulky, its
tail very long. The general coloring of the under parts
was apparently grayish. I think that the bird must have 
been a female Goshawk. I did not once see it
beat its wings but the course it followed was 
not quite straight and just as it was passing out
of sight it made a sudden twist to the right, followed
by one to the left. There was little or no wind at the time.
Gos hawk(?)