1903.
May 13
  Cloudless with strong S.W. wind. Warmest day thus
far. Ther. 84 degrees
  The birds continue to come by driblets. The only
obviously new ones noted to-day were a Warbling Vireo
singing near the house and a Blackburnian in the
white pine woods near Pulpit Rock. Bobolinks seemed 
to have increased somewhat in numbers. Hearing one
sing near the house I looked for him vainly for
some time but finally discovered him perched in company 
with three companions of the same sex in the top
of a large white oak.
  I noted during the day only one Cat bird, Redstart,
Baltimore Oriole, Scarlet Tanager and Rose-breasted Grosbeak.
  It is time they were here in force and, by the way, 
what has become of the Black & Yellow Warblers, Black
throated Blue Warblers, Water Thrushes, Golden winged Warblers,
Olive backed Thrushes, Red-eyed Vireo, Cuckoo etc., all
of which are overdue? Altogether it has been a singular
season and probably the weakest migration I have
ever witnessed. Since May came in there has not been 
a single well-marked flight or "rush" of any kind
of bird. Indeed it has seemed to me as if only
our summer residents had come & and they not nearly
in their usual numbers. I suppose the continued 
& remarkable uniform clear warm days & cool nights
must be responsible for this state of affairs. In other
words there have been no weather conditions calculated
to either accelerate or retard the movements of migrating
birds & they have probably come a few at a time
every night & passed directly on northward when found
further in that direction.