My chicken was attacked by a dog a month ago but she has been healing wonderfully except she is very thin and much smaller than the other chickens. Her crop seems full after a day of feeding, has good looking poop but she is just a sack of bones. I tried to give her dry cat food but she just pecked at it like it was too hard to eat. Also she was growing back feathers, today they look like they were plucked out- the other chickens? The other chickens have been going through a growth spurt so now they are so much bigger than her. Do I spray on some blu-koat until the feathers have grown out?