Concord, Mass.
1910.
May 24
[May 24, 1910]
  Clear and very warm (about 85 [degrees]) with light S.W. [southwest] wind.

A light bird wave arrives.

  There was evidently a light bird wave of north bound
migrants passing to-day. Soon after breakfast I heard singing
in the run at the farm a Wilson's Black-cap (not previously
noted this spring) and two Black & Yellow Warblers (of which
I have found but one individual before). Mr. Dexter reports
by telephone that two or three Black-polls and four or five
Black-throated Green Warblers were singing in the village
elms at Concord in the early morning. During his morning 
walk he found a Henshaw's and a Savanna Sparrow singing
in the fields near the Poor Farm where I found both
species breeding in 1886 or 1887 (I have not looked
for them there since).

Henshaw's & Savanna Sparrows.