87

Concord, Mass.
1916
Aug. 30
to
Nov. 4

Goshawks

Henshaw [Henry Wetherbee Henshaw] and myself on September 28 [September 28, 1916], at Birch Field.
Accompanied by two Red-shouldered Hawks, keeping ever
with or near them and occasionally swooping down abruptly
at one or the other it remained in sight for several minutes
and once circled low over us (within fair shot-gun range)
when we saw that it had a plain brown back and
probably dark-streaked underparts. As compared with the
Red-shouldered Hawks it looked larger than either - although
one was an adult female - and showed a conspicuously 
large tail. Its soaring flight resembled theirs very closely
but when gliding straight onward, with alternating
quick-flapping and stiff-set wings it might have been
mistaken for a young Cooper's Hawk but for its greater size.
  On October 3 [October 3, 1916], a Hawk that looked precisely like
the last-mentioned and was probably the self-same bird,
passed high over Birch Field to the southward, while
S.O. Dexter [Smith Owen Dexter] & I were strolling there together.