Concord, Mass.
1910.
April 3 [April 3, 1910]
  Clear with fresh north-west wind. The ground froze
last night but it was deliciously warm through the day.
  Spent most of forenoon roaming about in the woods
visiting Holden's Hill & Davis Hill. The Red-shouldered
Hawks were near the nest in the big chestnut where
they have bred for several years past. I saw only the
[male] (now in fully adult plumage) but both birds were
filling the air with their wild, ringing music (to my
ears their screaming is highly musical besides being very
thrilling) as I entered the woods.
Red shouldered Hawks at Holden's Hill again.
  A Brown Creeper was singing on Davis Hill.
I wonder if he is the same bird that had a nest
there last year under a scale of loose bark on the
big dead pine.
Brown Creeper in song.
  Chickadees, Song Sparrows, Phoebees, Red-wings, a
Pine Warbler, a Flicker & a Robin singing at Balls Hill.