Concord, Mass.
1910
June 26
[June 26, 1910]

  Clear and warm with light westerly winds: - a
perfect June day.
  Birds of many different kinds continue to be
exceptionally numerous at the Farm despite the fact
that almost every leaf in the cultivated grounds within one hundred yards or
near from the house and throughout a large part
of the neighboring woods or wall, has been coated
with arsenate of lead for two or three weeks. Indeed
as far as I have been able to observe this extensive
and very thorough spraying, necessary to prevent
the myriad of gypsy caterpillars from eating up
all the vegetation on the place, has not resulted
in the slightest harm to bird life. It may be that
a very few birds have perished but if so their
places must have been quickly taken by others of
the same species for of all these were here before