Concord, Mass.
1909
May 15
(No 3)
in the Fresh Pond Swamps upwards of forty years 
ago. Although I have been accustomed to refer to
it in my notes as "drumming" this term is really
inappropriate. Nor do I like "bleating" much better.
"Winnowing" is perhaps the most suitable name of
all (I think I originated it when a boy) for the
sound is not unlike that of a Dove's wings,
yet different in some aspects, being very much
louder for one thing and altogether more intersting
and impressive, having an eerie quality peculiarly its own and perhaps due
in part to the conditions under which it is most
commonly heard.
Drumming of Wilson's Snipe