Ducks are smart but there also pretty, and will convince you to give them your delicious ham sandwich and to represent that in dnd they have increased scores in both charisma and intelligence.

You, as a duck, are not a picky eater and can eat bugs of the ground, raw fish, all grains, fruits, vegetables, and berries (if there is something you think is missing or there's an argument with your play group about what your eating, look up "what can a duck eat" or something similar and fact check it there)

When playing as a duck you have advantage on perception checks that have to do with sight.