Concord, Mass.
1900.
May 27
  Clear & warm; nearly dead calm all day. Ther. 41 degrees - 77 degrees.
  Off with the camera directly after breakfast. First
visited and photographed a Partridge's nest containing 9 eggs.
It is on the western edge of the swamp behind Ball's Hill
at the foot of a steep slope covered with rather tall oaks.
The nest is composed of and lined with oak leaves. It is
very deeply hollowed and is placed at the foot of a sapling
near the stem of a large oak. A few leafy maple twigs hang 
over & partly conceal it. I was struck by the close resemblance
between the color of the eggs & that of the bleached oak
leaves in & about the nest. The bird was absent at
8 A.M. but when I visited the nest at 1 P.M. she was
sitting. She allowed me to approach within about 5 feet
and then taking three or four quick steps rose & flew
out of sight. Gilbert found this nest May 11th
when it contained its full compliment of 9 eggs. The
eggs were not covered when I made my first visit
this morning although the bird must have been away
getting her breakfast.
Partridge's 
nest with
9 eggs.
  I was in the Ball's & Davis' Hill woods practically
the whole forenoon. At least one half of the northern
migrants which were here yesterday had departed this
morning. I saw a Traill's Flycatcher which was calling pip
at the E. end of Ball's Hill and heard another giving
the song (quer-witchy) at short intervals & with great vigor
in the thickets which border the meadow at the S. end
of Davis's Hill. On the latter hill a Canada Nuthatch
was whirring and a Blackburnian Warbler singing. I heard
a second Blackburnian in Ball's Hill swamp.
Alder Fly-
catcher.
Canada 
Nuthatch.
  Crossed the river at evening but found nothing of interest
on the W. Bedford side.
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