Hi there, just joined BYC today! I have an Indian running duck that I am very worried about. His leg is very swollen and the foot is starting to turn very dark. Is this gangrene? Is there anything I can do for him at home? I've contacted multiple local veterinarians all of which want to start the bill the second I enter the clinic and I don't have a lot of money but I don't want the duck to suffer. Any advice is greatly appreciated!