A blackish patch on the sides of the throat, similar to that of the duck hawk.
The duck hawk (Falco peregrinus anatum) is one of the representatives in America.
The nesting habits and the eggs are precisely like those of the duck hawk.
Above brownish black, much paler and never with the slaty color of the duck hawk; below streaked or spotted with blackish brown.
As the Peregrine of falconry we know of the duck hawk as a fearless, dashing hunter of greater power of wing and talon.