Not to start the hybrid thing all over again like the Craig S post.
A black duck can have a faint white line posterior to the speculum. My friend shot a Black last week that was very large and much darker, Black in fact, not the brown that they are supposed to be even though they are called blacks. There was no white on/near the speculum at all.
I am going to try and research what a black hybrid typically looks like. It can't be something as little as a line should be 2mm thick and since it is 2.5 it is a hybrid
This bird was of normal size and color variant. This is
NOT a Hybrid Black.
American Black Duck From Wikipedia, the free encyclopedia Jump to:
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American Black ducks are similar to mallards in size, and resemble the female mallard in coloration, although the black duck's plumage is darker. The male and female black duck are generally similar in appearance, but the male's
bill is yellow while the females is a dull green. The head is slightly lighter brown than the dark brown body, and the
speculum are iridescent violet-blue with predominantly black margins. The black duck has orange legs and dark eyes. In flight, the white underwings can be seen in contrast to the dark brown body. The behaviour and voice are the same as for
Mallard
Please read below that a black can have one faint line or none. I believe that the hybrid ones are the ones that have the anterior white line to the speculum that the hen mallard has.
