2
Concord, Mass.
Spring and Summer
1913.
March 15 
to 
July 3 (No 2)

Summer resident birds in usual numbers & variety.

the summer residents had come and settled in their
accustomed haunts about the Farm and at Ball's Hill they
seemed, for the most part, to be quite as numerous as usual 
although there were comparatively few Robins, Tanagers, Orioles, Thrushes and
Grosbeaks and almost no Field Sparrows and Towhees.

Effects of spraying.

  Ball's Hill was thoroughly sprayed with arsenate of lead June 9-11
and practically all the orchard & shade trees at and close about 
the farm similarly treated between the 11th and 13th. As far
as I was able to observe this resulted in but little if any harm
to the birds. At the Farm only a few were afterwards
missed and the disappearance of these (except, perhaps, that of our
single pair of Orioles) may well have been due to something else.
Ball's Hill has had but few breeding birds of any kind within 
recent years. Such as were there this spring before we began
spraying remained after it.

  Fearful ravages were committed this season by caterpillars of