Accipter Cauda furcata: The Swallow-Tail Hawk.
It weighs fourteen
ounces: the Back black and hooked, without angles
on the sides of the upper Mandible, as in other
Hawks; the Eyes very large, and black, with a
red Iris: the Head, Neck, Breast and Belly white;
the Upper-part of the Wing and Back, dark purple;
but more dusky towards the lower parts, with a
tincture of green; the Wings long, in proportion
to the Body; they being extended, are four foot;
the Tail dark purple, mix'd with green,
remarkably forked, the utmost and longest
feather being eight inches longer than the
middlemost, which is shortest.
Like Swallows, they continue long on the wing, catching, as they
fly, Beetles, Flies and other Insects, from trees and bushes. They
are said to prey upon Lizards and other Serpents; which has given
them (by some) the name of Snake-Hawk. I believe they are
Birds of passage, not having seen any of them in winter.