Concord, July 17 1904
Clear & cooler with fresh E. [east] wind in late P.M.
  Spent A.M. about the farm. Long came down
and we rambled about planning for the autumn
work. In P.M. skirted the river front from
Birch Island to Holden's Hill. Red-eyed Vireos,
Wood Pewees, Tanagers, Towhees, Field Sparrows &
Robins in full song; also Song Sparrows. Heard a 
Partridge drum over near the spring & saw an adult
[male] Marsh Hawk flying over Bensen's pasture. Green Frogs
"twanging".