Hi all, I've got 4 ex-battery hens and one of them has been giving me cause for concern for a month or so now, because she has gradually developed a very pale comb. I though it might be anaemia, so I dusted them all for mites, and wormed them all. I kept her under observation and fed her iron-improving things like small pieces of lamb, spinach, scrambled egg and kale.This was a few weeks ago, and though her behavouir has been absolutely fine (til a few days ago), her comb has remained pale, and has now even started to yellow. A couple of days ago she started to be all hunched and fluffed up and unhappy. I've given her an epsom salts bath, and a dry with a hairdryer, given her mealworm in olive oil to hopefully help clear any internal problem. She had been laying some days, quite pale eggs, but okay inside. A little wrinkly, and occasionally very frail shells. She's not eating very much, and I've been giving her drops of a vitamin tonic for birds, but today she had really gone downhill fast. She's now just sleeping a lot, cosied in a towel on my knee. I don't know what to try now! Any advice?