I'll try to cover as much detail as possible, as a city sister helping a sister who is too busy farming! [drying/red issue with rooster feet in winter, only one]
My sister is a very busy and cautious farm mom with around 50 chickens just South of Salem, Oregon in the Pacific NW, and they have had slightly freezing weather around 29 at night at times... so some mud and rain/snow out but their indoor establishment is amazing; dry, warm and very clean. This speckled Sussex, probably between 8 to 10 pounds and a year in February, Charlie the Magnificent!, is having a drying issue with his feet.
She had little chicks around so ended up adding EXTRA heat to the coop and had been feeding Organic Pride Chick Starter/Grower and they often share food. When the chicks get older, she adds/feeds Organic Pride layer pellets to everyone. This is where she may be worried about extra protein?
A few days ago she noticed his feet were a little red, and a redness up the leg and then a small wound that she's been cleaning mud off of etc.
The first picture is oily because she's put on **some concoction last night, as it's much easier to examine him after dark. I hope to get photos after tonights feeding and checkup!
** I asked what she had put on the legs, it's a garlic, olive oil, colloidal, tea tree and peppermint oils last night.
Thank you so much for your help, my sister praises this site but doesn't have the time to figure this out without me right now :)