1903.
May 12
  Clear with light E. wind. Ther. rose to 82 degrees
  As I went to Cambridge today my observations at
Concord were confined to what I saw and heard during
my walk to the river in the early morning and the 
return walk over the same ground shortly before sunset.
So far as this experience goes to show there was
little if any migration last night. I did not note
a single species new to my list nor any increase in
the number of individuals of such species as have
arrived within the past few days. There seemed to
be very few of those later arrivals anywhere & almost
none at Ball's Hill. Indeed a Wilson's Thrush & a 
Rose-breasted Grosbeak were the only ones worth mentioning
that I found after passing Bensen's this morning.
The Grosbeak was across the river very near the
stone boat house. I heard no Orioles nor Tanagers
but Gilbert reports one of the former singing near
the farm house this afternoon.
  At Cambridge I found a Cat bird & two Redstarts
singing in the Garden & I heard a Grosbeak in
the Smith place. Walter Deane told me that 
no Orioles have been reported in Cambridge as yet.
They are certainly late but so are all the early
May birds. Even the Bobolinks are not here in
any numbers as yet.