38
Concord, Mass.
1913.
Spring and early summer.

92.  Cooper's Hawk. Occasionally seen or heard at the Farm or in
neighboring woods from March 19 [March 19, 1913] to June 25 [June 25, 1913] inclusive but I doubt
if there was a nest, this year, anywhere in that vicinity. The
characteristic spring utterances, consisting of short, staccato, almost explosive,
barking notes delivered singly, at short intervals, or in vehement volleys,
was heard on March 21 [March 21, 1913], April 7 [April 7, 1913], 8 [April 8, 1913], 13 [April 13, 1913] & 15 [April 15, 1913] and on June 25 [June 25, 1913]. On
July 1 [July 1, 1913] a bird was seen skimming low over the marsh opposite the
cabins at Ball's Hill, pursued by Red-wings.

93.  Sharp-shinned Hawk. Single birds noted, respectively, as follows: -
On April 8 [April 8, 1913] & 19 [April 19, 1913] at Ball's Hill; on April 23 [April 23, 1913] & 26 [April 26, 1913] at the Farm.
All these were probably north-bound migrants. None were noted later.

94.  Red-shouldered Hawk. The nest in the fork of the big chestnut
on the south side of Holden's Hill was occupied by a breeding pair
as it has been for several years past. A bird was heard screaming
near it on March 15 [March 15, 1913]. I passed beneath it only once - on May 21 [May 21, 1913],
when the [male] parent stooped at me six times in quick succession,
starting about 50 yards away on a level with the tops of the trees,
coming with meteoric swiftness and passing directly over and
with two yards of my head to mount, circle and plunge again,
screaming all the while in piercingly shrill tones. As he passed
his set wings made a rather loud rushing sound. It was difficult
to withstand his threatening onset without flinching. No doubt
there were then young in the nest but I could not see them.
It is possible that another pair bred still nearer our farm
where I often saw the birds whirling and soaring with loud cries,
usually singly or in pairs, sometimes three together. Their
wild ringing outcries continued to be heard through May &
June.