1906.
May 18
  Clear, calm, oppressively hot. Ther 53 - 88 degrees.
  The warm wave brought a big bird wave. I noted for
the first time only two species, however. These were
  Bay-breasted Warbler - 6 males in full song in elms near house, one
in pitch pines in the Run, four in
white & pitch pines in Pulpit Rock woods.
Arrivals
  Lincoln's Finch. Started a bird from a ground juniper among
the gray birches east of the cow pasture. It
was silent and rather tame. I had a good
view of it at about ten yards distance. It
flew up into a wild apple tree where it
sat motionless with raised crest watching me.
  The bulk of the Warbler flight that arrived last
night seems to have composed of Black-polls, Bay-breasts
and Magnolia Warblers. Of the first named I noted 4 males
& 1 female of the last 20 males and 1 female. The Magnolias were
scattered about almost everywhere. There were three or four
in our blossoming apple trees, as many more in the Run,
while the remaining birds were noted chiefly in Pulpit Rock
woods. I heard two Black-throated Blue Warblers, one
in the Run, the other near Pulpit Rock. The Usnea Warblers
are still here in numbers, especially in the blooming apple trees.
I heard three Blackburnians to-day.
  Birds of every kind sang through the entire forenoon &
well into the afternoon despite the intense heat but at sunset
and for nearly an hour before it there was almost no singing.
Bobolinks, Grosbeaks, Orioles, Tanagers & Wood Thrushes sang like
mad nearly all day. I have rarely heard anything like
it here.