1893
April 9
(No 4)
Concord, Mass.
  A little below Davis's Hill just as the sun was setting
we started a flock of eight Scaup Ducks from the flooded
meadows. Through my glass I could see their markings
with perfect distinctions and easily made out that there
were four males and four females. They looked very large
and were, I am very sure, Greater Scaups. Rising in 
a great circle to above the tops of the trees they flew
out of sight in the direction of Sudbury Meadows. I 
have never before seen either species of Scaup in Concord
River in the spring. 
[margin]Scaup Ducks[/margin]
  Soon after the Scaup Ducks had disappeared I
discovered by means of my glass four Golden eyes, three
of them old drakes, swimming in the rough water of
the channel of the river. They rose soon afterwards
and followed the Scaups making a loud, steady
whistling.
[margin]Golden eyes[/margin]
  Twelve Black Ducks also flew over coming from the
westward &[and] disappearing beyond Carlisle Bridge. They
sometimes closed in together but as a rule flew in
three bunches of six, four, and two birds each.
[margin]Black Ducks[/margin]
  An Osprey started out of the oaks on Lawrence's Hill
and few off whistling.
[margin]Osprey[/margin]
  We saw a flock of five Tree Swallows and one single
bird flying in company with two male Red-wings
and keeping close with them. I do not remember
to have noticed this habit in spring before. 
[margin]Tree Swallows[/margin]