Cotton is a one year old Pekin Duck. I searched bumblefoot and he definately has it. I cut off the black spot as gently as possible and pulled out a hard white thing with tweezers. I could see more hard white things in the opening but I was not sure if it was infected tissue or something that needed to be removed. I cleaned his foot before and after and it is wrapped up for the night. I separated Cotton from the other ducks but his BFF Daffy (mallard) is with him. I don't want either of them to be sad or lonely. I read several threads about chickens with bumblefoot having a big yellow core that you have to pull out. Is that the same for ducks? I am not too certain what I am looking for so that I can remove it. I will soak his foot in the morning and try to get out the core. Also, Cotton's other foot keeps rolling under when he walks. It was rolling under before surgery. That is actually the reason I checked his feet. The foot that is rolling under looks fine. Any advice is greatly appreciated. Cotton has been attacked by a possum, a rooster, and broke his foot in the past and this wonderful site has helped me doctor him through it all. Thanks in advance for all your help!