Concord, Mass.
1911.
Oct. 3
[October 3, 1911]  Clear & warm with light westerly to southerly winds.

Autumn coloring

  Maple swamps ablaze with reds and hickories splendid
with old-gold foliage - both apparently at their best to-day.

Black Ducks migrating

  Saw three flocks of Black Ducks migrating, all
flying past Ball's Hill towards the S.W. [Southwest]. The first
flock passed low down at 8 A.M. & contained 12 birds.
The second flock, also flying low, passed at 11.45 A.M.
and comprised about 25 birds. The third flock passed
at 5 P.M. & contained 14 birds which were moving in
v-shaped formation like Geese & almost as high in
air as Geese habitually fly when on migration. 
It is long since I have seen so many Black Ducks
here in the course of a single day.

Pied-bill Grebes.

  Two Pied-billed Grebes were swimming in the
river in company opposite the cabin at 7 A.M. I
saw one or both several times later in the day