Cambridge, Mass.
1914.
March 17
[March 17, 1914]

Hairy Woodpecker utters an unfamiliar outrcry.

  A prolonged succession of kla-kla-kla cries, 
given very rapidly in a shrill, falsetto voice, fell
on my ears about 9 A.M. as I was standing in
front of the Museum. Thinking they must come from
a Sparrow Hawk, performing a love flight, I scanned
the heavens for such a bird. It was not until
hearing them for the third time that I traced them
to an apple tree in which were three Hairy Woodpeckers
hopping about near together, bowing and scraping
precisely like so many Flickers. That the Sparrow-
Hawk-like notes (they were very like) were uttered
by one of the Hairy Woodpeckers is almost beyond
question although I did not actually see that
such was the case, being too far off. Nor 
did I ascertain the respective sexes of the 
members of this interesting trio.