9.
Spring & early summer.
Concord, Mass.
1913.

5 Robin. During March and April Robins were pathetically
scarce in our part of Concord. In the neighborhood of
Ball's Hill I heard only one singing; at the farm there
seemed to be no more than two pairs. About the middle
of May they increased in numbers until there seemed to be
at least twice as many as there were last year. By
the 24th [May 24, 1913] I had located three occupied nests near our
farm house and a fourth in the berry pasture.
Although the birds suffered no harm they seemed to
be having ill luck with their nests and up to the
date (June 30 [June 30, 1913]) when I returned to Cambridge not
one young bird was seen or heard about the place.
I repeatedly found eggs punctured with small holes,
but still retaining their contents, on the ground in the
orchard and along foot paths. Three eggs in a Chippy's
nest were similarly perforated. I suspect House Wrens
may have done it. We had 2 nesting pairs this year.