I have a pekin (cochin) bantam hen who used to weight 750g. She suffered a long period of extreme broodiness,stopped eating almost completely and went down to 600g. She saw the avian vet who crop fed her for a day which started her eating again and helped improve the broodiness. She seems largely over her broodiness now but she still has to be shut out of the nest box or it's obvious she'd start sitting again. However so long as I do this she mostly acts like a normal chicken, on her feet hanging out with her buddies in the yard (although she does still ruffle her feathers occasionally so I think the hormones are still playing her up a bit). It is two weeks since she saw the vet and she has now been at about 650g for the past week but despite treats like warm mash and scrambled egg I can't seem to get her to gain weight. She has been wormed recently with flubenvet so I don't think it is that. She is interested in food but just isn't eating quite as much volume as she normally would. I am particulary concerned as it is quite cold at the moment so she needs some fat on her. Any suggestions on how to fatten her up.