Old age or sickness?

[Wyorp Rock]

I’m having some difficulty uncurling her feet and taking pictures. Is this alright?

Sometimes it's hard to manipulate them by yourself. Can you get a helper to hold her so you can inspect her feet a little better.
It's hard to tell if that's debris or if she's has more going on there. Those "creases" are interesting but it may just be the way she's made. I would also look in the nooks/crannies underneath to make sure the foot are not packed with dirt/debris.
The foot do look swollen though. Is she eating and drinking well?

 

[Eggcessive]

How long have the toes been curling under? Have you given any vitamins. She needs riboflavin (B2) which you can give with some chick vitamins or with human vitamin B complex. Do not use B12 or Poultry NutriDrench. This can be a sign of vitamin B 2 riboflavin deficiency. It sometimes is seen in Mareks, usually affecting one foot.

 

[Chicken Girl1]

Her feet have been curled since the beginning (almost a month now), but before she wouldn’t move whatsoever so I didn’t notice it as much. I’ll clean up her feet and try to take better pictures. I’ve given her B12, but need to get B 2. Thank you so much for the help!

 

[Eggcessive]

If you can get Bcomplex, that has all the B’s in luding riboflavin B2 and B12.