Concord, Mass.
1908.
March 14
to 
June 1
  Nor did I see or hear Traill's Flycatcher, the Yellow-bellied Flycatcher
or the Olive-sided Flycatcher. Such northern birds as I did
fall in with were widely scattered as a rule and in no instance
did I meet with a really good flock of them. They passed
on northward before the close of the month the very last of them,
a Gray-cheeked Thrush and a Black-poll Warbler, being noted on 
the 28th.
Spring Migration.
  Most of our local birds arrived a few at a time but many
of the earlier comers among them were not much if at all behind
their average dates. After they had all come and settled for the
season in their breeding haunts they were, as a rule, as numerous 
as usual although a few of them were rather less so and one or
two apparently quite wanting as will appear from the following
notes.
Summer Resident Birds.
  Wood Thrush: - A male singing in "the run" at the farm from
May 10 to 25, two males there from the 26th to 31st, one there
on June 18th.
  Wilson's Thrush. Less common than usual in the Ball's Hill region
where there were two males in the swamp behind the hill, one
across the river near my stone boat house and one behind Davis Hill.
At the farm we had one bird singing regularly in "the run".
  Robin. There were at least five occupied nests at the Farm at
one time late in May although I never heard more than two male
birds singing there at once. Most of the nests were in apple trees
at the rear of our house but one bird nested on a beam in
the barn cellar. Here she began nests in half a dozen places
finishing two of them but putting no mud in either. She laid