Kwackers is my best duck. She is a Khaki Campbell and will be two next month. She has been laying eggs since she was four months old only missing a few days. Her egg shells were getting thin even though I mix layer feed and game bird breeder and give calcium carbonate free range, so I have been giving her calcium citrate with D. I am pretty sure she has been laying better eggs for the last few days. When I came home yesterday she wasn't acting right though. She was laying down away from the group. feathers puffed, and wouldn't come to me for tomatoes. At bedtime, she got up and walked into the coop with the group and seemed ok. Today, she was laying down away from the group again. She isn't holding her tail right and wobbles when she walks. I might think she is egg bound but I am 95% sure she laid an egg this morning. I felt her abdomen but I didn't feel anything but her bones. Her abdomen does seem sort of swollen to me, though. Any ideas?