It's too late for two of my girls, 1 died 2 weeks ago, 1 in the late fall. Both had exactly same symptoms-started losing weight, breastbones became prominent, then felt like nothing but feathers and bones. Combs became pale and shriveled. Would not dust bathe, kinda stood around and looked confused. In the end, would not perch, eat, drink. Tried everything I knew to help them, extra food (yogurt, eggs, etc), dusted them-but did not worm them. I have dusted my remaining chickens and their coop, wormed them, and vaselined their legs. Is there anything else I could or need to do? I only have 2 hens left - they seem ok, but they do have runny poop. They are both 4-5 yrs old. What do you think was wrong with the ones that died?