Glendale, Mass.
1907.
June 26
  A pair of Broad-winged Hawks are haunting the
woods at the rear of the French's place. I think they
have a nest there in one of the big chestnuts or maples
but I cannot find it. I see them several times daily
entering or leaving the woods or soaring together in circles
high over the open fields uttering the shrill Killdeer-like
cry, ka-dee-e-e. I do not remember hearing anything
else from a Broad-wing before to-day when, about noon,
as D.C. French and I were in the woods behind the studio
one of the birds just mentioned (the male, I thought)
passed over us through the tree tops, gliding straight on,
on set wings, uttering twice a series of about five
creaking calls given in quick succession and distinctly unlike
the Killdeer notes. I rendered them thus: Tswee-e,
tswee-e, tswee-e, tswee-e, tswee-e. Not only were
they accented on the first instead of the second syllable
but the quality of the voice was different from that
usually so characteristic of the Broad-wing and the notes
much weedier. The bird was certainly adult. I wonder if
its juvenile cries were love calls or expressions of alarm
or protest because of our presence in its chosen haunts.
It is singular that I have never heard them before.