Concord, Mass.
1908
April 18
  Cloudy and warmer with fresh S.W. wind. Light rain
at evening.
  I have seen or heard Red-shouldered Hawks in
the Holden Hill woods nearly every time I have been there
this spring. This morning I flushed the female from the nest
in the big chestnut which the birds built and raised a brood
in last year. The nest looks just as it did when I first
saw it last month. There was no down visable this 
morning. The bird started when I was 100 yards away
and flew to the crest of the hill where she alighted in
an oak. I kept on towards the nest. When I was
nearly under it the female began screaming loudly, opening
her mouth very wide as I could see through my glass.
A few moments later she started and came straight for
me on set wings, with great swiftness. When within
twenty yards she turned slightly upwards & to one side
passing me, however, within ten or fifteen feet. She then
alighted within thirty yards and screamed again long
& loud making the woods ring with her wild, musical
clamor. Soon afterwards she stooped at me again &
a little later still again on each occasion shearing
over & to the left of me at the last moment. The
straight, silent onrush of the big bird was very
impressive. All the while her mate was soaring high 
overhead screaming now & then. He is in immature 
plumage like the male of last year & no doubt he is
the same individual.The female, too, appears to be the
same as last year a fine large bird with deep
ruddy breast & in fully mature plumage.
Red shouldered Hawks occupy same nest as last year
The female swoops at me
The male an immature bird as he was last year