Image from the Biodiversity Heritage Library.
Contributed by Harvard University, Museum of Comparative Zoology, Ernst Mayr Library.
| www.biodiversitylibrary.org
Transcription
Nov. 1873
Sometimes you see one sitting for a long time
motionless and erect in the tall grass watching
like a cat, or perhaps walking slowly with a
sideling motion - at this season it feeds exclusively
on mice and rats, in early Spring on toads, frogs
snakes &c. - I doubt if it ever attacks birds - for
in about a dozen specimens examined at different
times, I have never been able to detect any of
their remains, and I have never in a single
instance seen it pursue one of them on the wing.
A wounded quail or snipe may occasionally
fall a prey, but such instances must be very
rare. A mouse when seized is usually tore
in two, and the head and body bolted whole,
while a rat is divided into 3 or 4 parts, but
everywhere skin, bones, and all. By morning
5 or 6 mice to an generally captured, the crop
and stomach both filled and the bird either
removes to some high perch where it may remain
undisturbed, or betakes itself to sailing in most
graceful circles high up in the sky -
Its flight is slow and rather heavy, but its
acerial evolution extremely majestic and beautiful.
When removing from one place to another it
proceeds in a straight course, with 3 or 4 rather
deliberate flaps of the wing, then an interval
of sailing. When about to alight on a tree, it
shoots upward in a cycloid curve, drops its feet
to a branch, and closes its wings frequently without
a single flap. Sometimes I have seen it swoop
down from an height and almost grazing the
ground, snap upward in the above described curv
and alight almost without a perceptible motion
of the wings - It near hunts its game on wing
or swoops upon its directly from the air. It frequents