1892
April 29
Concord, Massachusetts.
Mass.
Concord. - Cloudy with frequent light showers and
light N.W. to S.W. winds. Warm & rather "muggy".
"Ther. 50[degrees] at sunrise, 58[degrees] at noon" (Transcript).
  To Ball's Hill by Rob Roy canoe sailing down at
10 A.M. and paddling back at 5 P.M.
  As there has been no marked warm wave of late I
was somewhat surprised at the arrival to-day (or
last night) of several species of birds and the increase
in the numbers of others. In fact there was a 
larger migration than on any one day before this spring.
On the left bank of the river just below the swimming
place I saw two Spotted Sandpipers (a pair?), at
Ball's Hill near my house two unusually high plumaged
White-throated Sparrows, and flying over the pines
near the glacial hollow a flock of fully thirty Barn
Swallows, White bellies, Bank Swallows & Swifts. I
merely heard the note of the Bank Swallows (repeated
many times). There were two Swifts and perhaps 20
Barn Swallows. These Swallows & Swifts appeared late in
the afternoon. I also heard several Barn Swallows on
Great Meadows.
[margin]a "rush" of
migrants[/margin]
[margin]Arrival of
Swallows and
Swifts[/margin]
  There was also a fairly heavy flight of Yellow rumps
and I saw one flock of three Yellow Palm Warblers.
[margin]Yellow-rumps
Yellow Palm Warblers.[/margin]
  Marsh Hawks were unusually numerous. I saw three
adult males & a female. Standing in the door of my
house I called the latter from across the river to within
15 yds. of me by squeaking.
  A Bittern pumping steadily for an hour on Great
Meadows late in the afternoon.
  One of my men while digging a hole for a tree [?]
a rather torpid Green Snake out of the ground, the 
second time this has happened within a week.