Concord, Mass.
(Ball's Hill)
1900
April 23                
  Cloudy with occasional showers of fine rain. Wind
light, varying from N.E. to N.W. Ther; 45 degrees - 60 degrees
  Arrivals: Hirundo erythrogaster, 3 or 4; Petrochelidon
lunifrons, cork-in-bottle note heard once distinctly;
Spisella socialis, one at Ball's Hill, another at Bensen's,
both singing; Totanus melanoleucus, one heard whistling
over Great Meadows at evening.
Arrivals.
  Spent the entire day collecting & setting out
pines. I was in the field in front of the wood shed
most of the time but visited Pine Hill in the
forenoon & Davis's Hill in the afternoon. It was
a good bird day and the air was so damp &
still that one could hear sounds at unusual
distances. Some of the common birds were in
song practically all day. Flickers were especially
in evidence & Robins & Red-wings sang almost
unceasingly.
Birds sing
all day
  Besides the "arrivals" above noted the most
interesting birds which came under my observation
were a superb adult male Marsh Hawk which crossed
Benson's field in the afternoon and a Red-shouldered 
Hawk which was soaring & sreaming over Ball's Hill
& the Holden Hills after dinner. I also heard
one or more Herring Gulls screaming in the
distance of Davis's Hill.
Marsh Hawk
Red-shld " Hawk
Herring Gulls.
  Canada Nuthatches are still here.
Canada Nuthatch.   
  There was a full chorus of Toads, Frogs & Hylas
this evening.
Frogs & Toads
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