Leah glad to hear things have turned for the better ! Donna did have a valid point if they haven't been wormed I would look into that. Internal parasites as well as external creepy crawlies can literally suck the life out. I have a soda bottle with 3 holes drilled in the top I keep a mix of DE and poultry dust in and routinely dust my birds. Pay special attention under the wings, and and in the feathers on the back of the hackle, bird lice will always show signs of eggs on the feather shafts deep down especially under the chin. Well I guess chickens really don't have chins..lol