Concord, Mass.
1908
April 24
  Brilliantly clear with cool east wind.
  Birds noted for the first time this spring were as follows: -
Black-throated Green Warbler 1 in full song Ball's Hill (in Pine Park) 5 P.M;
Solitary Vireo 1 in full song in oaks behind barn at farm about 3 P.M.
Barn Swallow. 1 at Farm 2 P.M. 3 at Ball's Hill, 5 P.M.
Towhee, male adult in lilacs rear of farm house 4 P.M.
Yellow-bellied Woodpecker, female adult hickories rear of barn at farm, 8 A.M.
Bittern 1 pumping in Great Meadow at 5 P.M.
Arrivals
  Saw numbers of Yellow rumps and Yellow Palm Warblers
but they were widely scattered. Three Hermit Thrushes together
on Holden's Hill and two at the farm. On the west side
of Ball's Hill in Pine Park there were many Yellow rumps
& Yellow Red polls, a Ruby crown, a Black-throated Green Warbler
two Golden crests & a Pine Warbler while a number of Swallows
were darting about overhead.
  As I was standing on the shore of our pond early this
afternoon a female Broad wing Hawk alighted on a fence post
within 30 yards. I was concealed by some bushes & she did
not see me. Just after closing her wings she twitched her tail
sideways a dozen times or more. The motion was always
towards the right & sharp & emphatic. After this she
remained motionless a long time watching Lawrence's pond which
was within a few yards of her perch. She sat so very erect
that her body & head looked like an upward continuation of
the post. I saw her yesterday for the first time & the
toads began trilling yesterday, too. I wonder if she
timed her arrival by their first appearance!
Broad wing Hawk
  Started the female Red shouldered Hawk from her nest
at 4.30 P.M. She flew straight away out of sight this time.
When I passed the nest at 5.30 there was no bird there.
Red shouldered Hawk