Concord, Mass.
1907
April 3
  Brilliantly clear with light N. to W. winds. Early morning
cold, the ground frozen hard, the flooded meadows skimmed
over with ice as thick as window glass. Afternoon warm.
  On reaching Concord this morning I found the winter
snow & ice all gone save in sheltered places in the woods,
the winter frost well out of the ground, the roads settled
and dry, the grass in fertile upland fields bright green.
The farmers were ploughing and harrowing. I heard Wood
Frogs and Leopard Frogs through the day, and numbers
of Pickering's Hylas at evening. Butterflies of at least
three species were out in considerable numbers. The river
is very low for the season and only the lower portions
remain flooded. The water has not been over the river
path at Ball's Hill this spring. No flowers are blooming
as yet at the cabin but I saw a few crocuses, squills
and pansies at the farm. The alder catkins are shedding
their golden pollen & the white maples are nearly if not
quite in full bloom.
  The region extending from Ball's Hill to the Farm
was alive with birds to-day. I have rarely seen them
more numerous at this season. I found a flock of
fully 125 Juncos in Bensen's asparagus and nearly as
many more at the farm while there were about a dozen
at Ball's Hill and smaller scattered parties elsewhere.
There were about 15 Fox Sparrows at the cabin (some of
them singing at frequent intervals), 5 at the farm and
5 in Birch Field. Robins & Red-wings were very numerous.
I heard a Vesper Sparrow & a Field Sparrow singing and
a Dove cooing (at the Farm). Just before sunset two