My 4 month old Pekin Duck Cotton has a broken toe. It is the middle toe on his left foot. He tries to walk but his left foot curls under him and he falls down. There is no swelling and it looks exactly like his right foot. I could only tell it is broken by feeling it. He did not seem to mind that I was touching it. What can I do for him? Any ideas to help Cotton are greatly appreciated. THANKS!!