Raised leg scales and growths, what?

[elmo]

Birds that have feathered feet (like d'Uccles) will frequently have scales that look a bit raised but this is quite natural and not an indication of scaly leg mites.

 

[SANDSZOO]

Thank you all for your comments. One more question. It is winter here, should it be safe treating them now or could it be too cold?
Stacey

 

[ninjascrub69]

As others have already said, it sounds like scaly leg mites.
The most effective treatment i have ever used for this was spraying their feet/shanks with WD40.

ETA: Yes, it's safe to treat them now.