Concord, Mass.
1909.
March 27
  Although the air was chilly and the ground frozen
hard at sunrise the day turned out delightfully warm
with bright sunshine and light S.W. to S.E. breezes.
Clouds gathered before sunset & there was a dash of rain later.
  A Robin, a Song Sparrow and a Flicker were singing
near the house at sunrise. Later I heard Chickadees &
a Bluebird or two. About 4 P.M. a Fox Sparrow began
singing gloriously in the forsythia bushes in front of
the house. Shortly after this he came on the banking
under the parlor windows where he spent nearly half
an hour eating hemp seed that we keep there. He seemed
to be a solitary bird and he must have come more
or less for this afternoon for I was out of doors the
entire forenoon, near the house, and should certainly have
seen or heard him had he been here then. 
Birds singing
A single Fox Sparrow arrives at this farm.
   While in the orchard this afternoon I saw a pair
of Red shouldered Hawks pass overhead at an immense
height (at least 1000 ft). They were moving N. W. in a
perfectly straight course, on a level plane, one following in
the wake of the other at a distance of about 100 yards,
the male leading the way. Their wings were set and strongly
bowed as long as I had the birds in sight, yet they glided
on without effort and seemingly without inclining downward
in the least, for a distance of fully a mile, progressing
very slowly, however. I have often seen large Hawks do
this very thing before & to my mind its the most
majestic & impressive of their many different forms
of flight. The wings look broader than at other times
& there is something unusual & peculiar in the way they are
held.
Pair of Buteo borealis gliding at great heights