1903.
April 10
  Partly cloudy with occasional light showers. Wind N. to N.W.
Just pleasantly warm.
  Spent most of the day digging pines in Birch Field where, at 9 A.M.
I saw a Purple Martin flying about just over the trees uttering
its rich, mellow notes at frequent intervals. This is earlier, I think, 
than I have ever noted the species before. Another arrival
was the Hermit Thrush of which I saw one flitting about in
the birches just after sunset. A little later I heard two birds
clucking & giving the whirring call.
  The Coopers Hawks were cackling and flying about all
day long. They appear to spend the greater part of the day
among the pines where I saw them yesterday for their
cries came almost invariably from the same place. As I watched
them this morning, flying over the tops of the trees, I was
impressed by the fact that their flight is in some respects
quite unlike that of a Accipiter velox. They flap their wings oftener
and more rapidly vibrating them at times much after the 
manner of the Duck Hawk. Indeed they frequently reminded 
me of that species as they skimmed swiftly across the openings.
They suggested momentum rather than the lightness & buoyancy of
flight so characteristic of the Sharp-shin. This, however, was
merely the impression I received to-day. I have frequently
of course seen them move through the air precisely like the
smaller species & on the evening of the 5th as I have already
noted (in my journal entry for that day) one of this pair (the male)
sailed or rather floated several hundred yards as lightly &
almost as slowly as a drifting fluff of thistle-down.
  There was a belated Junco in the garden this morning. It
was a dull colored bird no doubt a female.