1893
April 21
(No 3)
Concord, Mass.
  Seen near this farm of late is a male Cooper's 
which haunts the pines above my glacial hollow where
I think he intends breeding. He scaled into these
pines this afternoon, as I was passing, uttering a
succession of the mewing, Jay-like cries which I
have recently described. Can he be the robber? He
might perhaps kill a full-grown Hen but surely he
could not carry one off!
[margin]Ball's Hill.
Coopers Hawk[/margin]
  Marsh Hawks must be migrating still for I saw
three this afternoon a fine white male and two
females. The latter were hunting in company something
I never witnessed at this season before. 
[margin]Marsh
Hawks[/margin]
  It was a great day for Pine Warblers. I heard
two singing in the pitch pines on Hunt's knoll
and at least four more in the Ball's Hill region
besides the one (a [male]) in the apple tree with the
Yellow Palm Warblers. The Pine Warbler's song is a
true trill, very musical and pretty with a soothing
quality perhaps derived from association with the
sound of wind in the pines which so often
accompanies it. 
[margin]Pine
Warblers[/margin]
  In the white pines on Bensen's knoll I found
two Chickadees accompanied by a Golden crested Knight
with a Ruby-crown chattering not far off, also in 
a white pine. When I first heard the chatter faintly
through intervening trees I mistook it for the
scolding of a Winter Wren. There is certainly some
resemblance though this fact never occurred to me before.
[margin]Ruby crowned
Knight[/margin]