So my duck is loosing feathers kind right under her wing (it looks like the image below, yes I know thats not a duck). I'm fairly new to duck ownership but from what I've read its either due to boredom and she's jut picking at her feathers, or from over mating (she lives with no other ducks currently so that can't be it) or she's just moulting although I don't see why she would loose feathers as soon as it started snowing outside. I just like some help figuring out whats going on and if this is anything serious. Also if it is because of boredom what would you guys suggest for keeping her entertained? Thank you.