Concord, Mass.
1901.
May 17
  Clear and warm. Wind light, S. E. in A.M., S.W. in P.M.
  Went to Concord from Lancaster this morning reaching
the cabin at 10.30. Vegetation has advanced considerably since
I left here (on the 13th). To-day the birches and maples
were in half leaf and cast a grateful shade. The oaks
are pink and salmon with their unfolding leaflets. Apple
buds fully open on a few trees, on others just ready to
burst. Rhodora in full bloom.
  There were but few birds at Ball's Hill and most of
those belonged to the common summer resident species
such as Redstarts, Chestnut-sided Warblers, Black & White Creepers,
Grosbeaks, Red eyed Vireos etc. Indeed the only migrants
noted were Water Thrushes of which I saw at least three
and Nighthawks of which I heard two peeping, one at
evening over the Hill, the other sitting on the branch of
an elm at the farm in the mid-afternoon.
  At the farm a fine adult male Marsh Hawk pressed
within 100 yds. of me skimming just above the tops of 
some birches.
  I examined the Phoebe's nest in the barn cellar and
found it still empty and apparently deserted but
Gilbert tells me he saw both birds on the 15th.
  There were Robins, a pair of Bluebirds, Grosbeaks, Tanagers
a Redstart, a Chippy, Oriole Swifts etc. in the old
orchard or about the house.
  At evening I walked to Davis's Hill and back
by way of Pine Ridge & Pine Park. Heard a number
of Wilson's Thrushes calling & one singing. Oven birds
were singing above the tree tops. Heard two Partridges drumming
this afternoon & started three others.
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