Concord, Mass.
1910.
Sept 20
(No 2)
[September 20, 1910]

daybreak and the woods on Ball's Hill and those across
the river were swarming with Warblers at sunrise and all
through the day. Practically all the Warblers I was able to
identify were Black-polls. Indeed I saw no others except 2
Black-throated Greens, one an adult [male] in full plumage.
  About 7 A.M., as I was standing by the river in the 
meadow at the east end of Ball's Hill, the squaling [squalling], falsetto 
flight call of a Golden Plover came distinctly to my ears
half-a-dozen times or more. The bird was evidently flying
southward to the east of the hill but I strained my eyes
in vain in the attempt to catch sight of it. Scarcely had
its voice died away in the distance when I heard and
at once recognised the quet, quet of a Sanderling. The
next instant two birds of this species flying in company
low (about 10 ft.) over the water passed me within
100 yards and disappeared around the bend opposite