Our 6 month old rouen just started laying like 10 days ago and she has developed a weird "pica-like" habit and she is trying to eat all these pad things. She has peeled paint off of the garden wall to eat, she was eating caulking yesterday, and she tried to peel pain up off our floor to eat when we brought her inside. She has stopped quacking and only makes her chatter noise when she is happy or running towards another duck. I don't know what to do. Any advice?? She always has access to fresh water and I change their food frequently.