In need of opinions on my ducks leg injury

[achicknamedWaffle9423]

Hi y'all, new member of BYC here. Hoping to get some answers from fellow duck owners about one of my seven Welsh Harlequin boys. He is about 16 weeks old and a couple of days ago started limping, and favoring his left foot, being very gentle towards his right. No external injuries, no swelling, no bruising, but he is not lethargic as one would be with a niacin deficiency. I do regular checks on all of my birds, but have very closely examined this one and have seen no signs of bumble foot, and no external injuries, but like all ducks my boys are very clumsy and playful, so they run over each other and play all the time. Any ideas as to what may be his problem?

 

[casportpony]

Welcome to BYC. Can you post some picture os the bottom of his feet?

 

[achicknamedWaffle9423]

Welcome to BYC. Can you post some picture os the bottom of his feet?

Yes, both are pictures of the seemingly injured foot, I've checked everyday since we've noticed the limp for bumblefoot, his feet are dirty now but I've cleaned them before every check up.