ducks, and bird in general, are intersting because they imprint and bond... That imprint/bond pretty much decided what their life is gong to be like. A duck can imprint on a human, but bond to ducks just fine if they are around other ducks or ducklings when little. my ducky ming mei didn't have that when she was a baby, her shipmate died after six days. So for two whole weeks, she was by herself in her brooder, with only me to keep her company. by the time victor came, she was too big and pecked him so they had to be separated into two brooders. so they both imprinted and bonded to me. by the time they were old enough to have lived outside, they wanted to part of it. that's how i ended p with ducks in my tub and under my dinning room table begging for a nibble. lol
Peter and sammy were a pekin and a snowy mallard i got last winter. they imprinted on humans, but bonded to each other as they were in the same brooder... They really wanted no part of us humans and prefered being outside. So i did what i had to do, i gave them away to a friend with outdoor ducks... They are much much happier now.