I don't know where the cut off between ducks and geese begins.

My mind says that a bird with a humped peak and a snout lower on its face is a goose and that a bird with a flat beak and a higher snout is a duck. My mind classified this image as geese.

Ducks, geese and swans are classified as members of the family Anatidae. I guess that species are more fluid that I imagined as a child.

I watched a video about the difference between duck and geese.

!LOLZ