Concord, Mass.
1900.
May 7
  Cloudless, the early morning keen & frosty with strong
N.W. wind, the middle of the day pleasantly warm, the
evening calm & delightful. Ther. 35 degrees - 60 degrees.
(Ball's Hill)
  At Ball's Hill I saw in the early morning a Water Thrush,
a Yellow Palm Warbler, & a few Yellow rumps & Redstarts.
A Dove was again cooing in the pines north of the
swamp. At evening I found a Wilson's Thrush and a
Yellow Warbler in the thickets along the river. 
At sunset swarms of Swallows, the majority Barn
Swallows with a goodly number of Eave Swallows &
a few Bank & White-bellied Swallows were darting
about over the east end of the Hill in company with
30 or 40 Swifts. An Oven-bird gave the flight song later.
Water Thrush
& Yellow Warbler
arrive.
  Spent the day at the farm in the grove
of Red Pines. Saw a Least Flycatcher & heard several
Nashville Warblers & Yellow rumps besides one Pine Warbler.
A Towhee was singing near the house at evening. 
First
Least Flycatcher
(The Farm.)
  As I was standing motionless under a pine on the
edge of the Barrett Run a female Sharp-shinned Hawk came
standing through the dense thickets near me skimming just
above the surface of the ground, finally alighting within
ten yards of me. She wore a peculiarly keen, alert
expression & was evidently hunting. Presently she started
over & passed out of sight. The next instant I heard a
Robin squealing as if caught & another calling pip excitedly.
I have never before seen a Sharp-shin hunt through such
dense cover.
  Purdie found a Blue Jay's nest with 4 eggs in Ash Swamp.
An early
Blue Jay's
nest. 
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