emaciated chicken

I noticed about a month ago that one of my chickens’ combs was very pale and shrivelled and that she seemed to have less energy than the others. When I picked her up I also noticed that she is extremely skinny under her feathers, like basically a skeleton. I brought her inside and dewormed her...

My 4 year old New Hampshire Red suddenly developed floppy blue comb with no signs of respiratory strain. There are moments when her comb looks better, but most of the time it's blue and getting worse. She is eating (a little less but eating still) with decent crop sizes at night but she is...