Concord, Mass.
1902.
April 4
(No 2)
  The Song Sparrow migration seems to be over
but Bluebirds are nearly if not quite as numerous
as ever. I saw three pairs (two were together) and
an old male and heard three other males singing
this forenoon.
Bluebirds abundant
  The weather has been cold for the past four
days and I do not think that many of the 
birds which were here on the 1st have departed
or that many fresh arrivals have come up from
the south. There are a few Juncos about but
I have not seen more than a dozen during any
one day thus far. Robins, Flickers, Red-wings
& Rusties are present in about the usual
numbers.
A lull in migration
  Shortly after eight o'clock this morning 4 Black
Ducks passed over Ball's Hill at a moderate
elevation heading northwards & I think on migration.
Partridge drumming at Ball's Hill
  I heard the Ball's Hill Partridge drumming
to-day for the first time this season & in
the usual place on the stone wall near the
big maple.
  Wood frogs have nearly ceased croaking; Hylas 
were peeping by hundreds this evening; the Leopard
Frogs have apparently not fairly begun as yet
for I heard only two to-day.
Batrachians
42