Concord, Massachusetts.
1894. 
Oct. 11 to
Nov. 21
(No 14)
Resume of Field Observations.
  During stormy or very windy weather I seldom saw any                                   
Buteos on the meadows but on clear, still days there                                        
were nearly always from one to three or four between Flint's                            
Bridge and Ball's Hill perched in the lower oaks, elms
or maples that are scattered along the banks of the
river. The trees at the Holt and thorn at Dakin's Bend
seemed to be most frequented but another favourite place
was the upper part of the Barnett's Bar reach.
  Through October the Red-shouldered Hawks were by far the 
more numerous of our common species but after
November 1st the Red-Tails outnumbered them three or four
to one, or rather, to be more precise or explicit, the Red-shouldered
Hawks were common through October and seldom seen in 
November while the reverse was true of the Red-tails.
Nearly all the Red-shoulders and certainly more than half
of the Red-tails that I saw were old birds. Both species
have learned to fear a man in a boat. Fifteen or twenty
years ago I often succeeded in paddling to within short
range of them but this autumn I did not once get
within even long gunshot.
[margin]Buteo borealis
et lineatus[/margin]
  I saw only one Sharp-shinned Hawk (Oct. 17) and not
a single Cooper's. The latter species is seen much less
often in autumn in Massachusetts than in spring. Probably
most of the spring birds breed with us and leave for
the south early. In other words comparatively few migrants
to and from more northern regions seem to pass this way.
   A Pigeon Hawk seen Oct. 17 and a Rough-leg Nov. 13th.
complete the list of Raptors. The Rough-leg was in
the dark phase of plumage. It looked as black as a