Concord May 4 1904
  Clear with light W. [west] wind. Very warm.
Vegetation advancing rapidly. Barberry, Spirea, &
Apple leaves unfurling, Willows green with young foliage.
Arrivals : Bobolink 1 [in full song] Ball's Hill 8 A.M. flying N. [north] high up;
1 Howe's meadow, 8.30 A.M. heard [in full song]; 1 Farm 6 P.M. heard [in full song] 
Oven bird flight song twice at evening, Holden's Hill;
Spotted Sandpiper, 2 along river; Upland Plover, call note
heard twice over Great Meadow (flooded) 6.30 P.M.
Spent day at farm transplanting & doing various odd
jobs. Went & returned by canoe via Howe's meadow.
Sailed most of way back at evening.