Thank you for responding so quickly!
To answer some questions:
She gets adequate calcium in her diet; calcium supplemented feed, eggshells, forages in the yard daily. I could try giving her vitamin D.
She's eating, drinking and pooping normally.
I'm not sure when she last layed as some of the...
My family's 2-3 year old Rhode Island red hen hasn't been doing well recently. She's lethargic, trips often and uses her wings to stabilize herself, and lately her comb looks paler than normal. She also has a red spot on her chest. So far, I don't think she has bumblefoot, her feet look healthy...