I have a 8 month old duck that I am curious as to what breed he is. He is an average sized duck, that appears to be fully black..however his head and some feathers near his wings shine green in the light. He has a white chest that extends into a line up the under side of his neck and stops where the bill begins. The bill I can describe as a "light olive" color with black mottling. The underside of the bill is a regular tan/orange color. The feet are orange with black spots as well. The wings are tipped with white feathers and the underside of the wings as well as a few stray feathers on his body are "brindle" color. What is he?