My chickens lump

[redmulp]

Hi folks
does anyone know what is causing this lumb on my chickens foot, it is obiously painfull, it is hard and black,
? caused by scally mite
.
thanks Helen F

 

[SunHwaKwon]

Is it on the underside of the foot as well?

 

[redmulp]

no just on top, it is not bumble foot.