I live in Palmetto, Florida on a beautiful lake with many birds, turtles and ducks. There is one duck that often comes onto my property and eats the dropping seeds from my birdfeeder. It's feathers are very dark except for a white patch on its chin, and it has on the top of its head what looks like a fuzzy brown poof, we jokingly call it the duck with the afro. I've tried to send you a photo, but don't know if I succeeded in doing so. We would like to know what kind of duck this is?