1905.
May 22
(No 3)
  The song of the Canadian Warbler may be best described
as an interrupted or stuttering warble very sweet and
pleasing if not eminently melodious. It is usually presented
by a hesitating tut, tut, as if the bird were clearing its throat.
  Wilson's Black-cap is a most interesting little bird very
like the Canadian Warbler in general behavior but fussier and
more animated. It feeds chiefly among low bushes (especially
willows) near water and is incessantly in motion. It is
much given to making short, abrupt upward flights to
seize insects from the under sides of the leaves. It jerks 
its tail upward every few seconds and also waves it from
side to side much after the manner of a Gnatcatcher.
It frequently darts out after flying insects and not infrequently
descends to the ground to search for food among the
fallen leaves. When on the ground it hops about briskly
& often flutters its wings. Its song is variable. Sometimes 
recalls a Nashville Warbler's, sometimes a Water Thrush's.
  The Partridge when unconscious of observation and
wandering through the woods in search of food often makes
a surprising amount of noise among the dry leaves.
I heard one to-day just over the crest of a little knoll
and felt sure that some creature at least as big as a
Fox must be coming my way. Stealing to the crest
of  the knoll I flushed a cock Partridge. 
  A hen Partridge has been sitting on nine eggs for a
week or more in the swamp behind Ball's Hill. The nest
is raised a foot or more above the ground among the stems
of a cluster of alders. Our road runs within ten feet of it.
At first the bird flew every time we approached & at 20 yds or
more. Now she allows us to pass provided we make no stop.