He doesn't have bumblefoot. I've seen that before. But it looks like his feet are turned toward each other and he keeps stepping on his own toes. The only way that he can walk is by leaning on his wing on the right side and using it almost like a crutch. Doesn't seem to be in pain he's eating...
I have a 5 year old male Peking duck that's been limping really bad for about 6 months can this be attributed to niacin deficiency it doesn't appear to be broken