Concord, Mass.
Ball's Hill.
1900.
August 2
  Brilliantly clear and deliciously cool with long
intervals of dead calm alternating with shorter ones of
moderate W. wind.
  Spent most of the day in the woods at Ball's Hill
or across the river near the new boat house. Purdie
arrived by the 5.30 P.M. train and we at once started 
on a walk skirting the Holden meadow to Davis's Hill
and returning by way of Pine Ridge & Pine Park.
The evening was calm and beautiful with a few
delicate, ribbon-like rose-tinted clouds floating low in the
west. The Holden meadow was full of wild flowers.
We saw a swarm of Red-wings - upwards of 100 - crossing
the river at Pad Island. A Bittern lazily winged its
way up stream. Swallows & Swifts were scattered about
wherever we chanced to look. The chink of Bobolinks came
from the uncut meadows.
  The following birds were heard singing to-day:-
  Mniotilta varia, the warbling midsummer song given thrice at evening
  Seiurus aurocapillus, the teacher song given once at evening
  Vireo olivaceus, two birds in nearly full song for an hour after sunrise
  Melospiza fasciata, two birds in full song at 4 P.M. another at sunset
  Melospiza georgiana, two singing at sunset
  Habia ludoviciana, adult male singing near cabin for an hour
after sunrise and at intervals through day. Song at
times nearly full.
  Agelaius phoeniceus, adult male in full song at sunrise
  Sayornis phoebe, adult singing fairly well in P.M.
  Contopus virens, one singing freely & well at sunrise.
  Colinus virginianus, one singing (bob white) for an hour after sunrise.
  A Water Thrush spent the day near the cabin.
Birds heard
singing
52