I have a 1 year old Mallard drake, and for the last few winters he has gotten ornery during the winter. He nips and bites me and my room mates around the ankles and feet, but as if bi-polar will happily snuggle with me three minutes later. I was wondering if anyone else had this problem or what I could do to help end this behavior? I have tried disciplining the way I was told to by other duck owners, giving him more food and water to ensure he isn't hungry or thirsty, and all-around spending more time with him... But nothing seems to be working. Please help?