I have 3 Pekins about 4 years old . One had bramble foot and cost me an absurd amount of $ with vet and antibiotics to heal --she is fine. My other 2 ducks now have severe limps and have several of these callouses or what appears to be Bramble foot callouses . I just don't understand it, nor can I afford to have them removed every time they occur. The terrain here is no different then any other yard or farm. They sleep on clean hay. They have a clean pool. They have soft grass to walk on during the day. They have a good diet (flock raiser) mixed with egg laying pellets, and corn & seeds in the winter, plus fresh veggies. I have 2 more ducks that I got in April, Runner and Khaki, who are lighter ducks and walking fine, but I do see the start of callouses or pads on their feet also. What is going on? Is it that the Pekins are a heavier duck? Perhaps they didn't get the niacin levels as ducklings being my first group so now their feet are more susceptible? Are some ducks more prone to having calluses and bramble foot? Is some callusing normal and does not always end up infected? Do lame ducks with reoccurring brambles need to be put down because they are in pain? Perhaps I should have stuck to rubber duckies!