Concord, Mass.
1909
March 29
  A wild March day, sunny for the most part but
with cloud masses continually driving across the sky before
the strong, cold N.W. wind.
  Birds not noted before this spring: - Hermit Thrush, Cow-bird,
Red-bellied Nuthatch.
Arrivals
  I found the Hermit, a tame, silent bird, among some
dense young white pines near the Barrett spring. When
I first noticed it it was perched on a low branch within
twenty feet of me throwing up its tail. It had probably
flown up from the ground a second or two before.
An early Hermit
  The Nuthatch was in some tall pines near Pulpit Rock.
I heard it utter the prolonged nasal whinny several
times but did not see it.
Sitta canadensis
  The Cow-bird was heard about 9 A.M. It gave
the clear, three syllabled whistling flight call which
is, I think, peculiar to the male and by him used
only in spring & early summer.
First Cow-bird
  About 9.30 I heard the throaty calls of Crow Blackbirds
and looking up saw a large flock of these birds flying
over our orchard at an immense height, steering N.E.
and evidently migrating to some distant place. I
counted the numbers of the flock roughly and got
just 70 but this figure was only an approximation.
I have no question that these Blackbirds were migrating
for our local birds of this species never fly at any
such height (nearly 1000 ft., I estimated it)
Big flock of Bronzed Grackles migrating at 9.30 A.M.