Concord, Mass.
1909.
May 26
  Brilliantly clear with light west wind. Rather warm.
   Purdie and I spent the entire forenoon in the woods
walking to the farm by way of Davis Hill, Birch Island
Green Field & Birch Field, returning via Holden's Hill. The
only north-bound migrants we saw were an Usnea warbler,
a Water Thrush & a White-throated sparrow. If there was
anything like the flight here yesterday morning that there was
at Cambridge the birds must have passed on or scattered
about before our arrival from yesterday afternoon. The chances
are, however, that no such flight visited the Concord Region.
No bird wave at Concord
 While at the Farm this forenoon we heard a Yellow-throated
Vireo singing loudly and heartily in the elm just behind the
wood shed. A moment later I discovered him on the nest
which was hung in the fork of a thick branch that left the
trunk from 15 or 20 feet above the ground. It sang for
several minutes without moving anything save his head
which was raised high and rolled about from side to side
after the manner of his kind. The female meanwhile was
quietly feeding among the branches only a few yards
off.
male Yellow-throated Vireo singing on nest