We have started to notice that one of our brown leghorns has a large croup. She is definitely skinny too. We are new to chickens and aren't entirely sure what to do. This leghorn has always been very skittish, so she is very hard to get a hold of. We did finally buy an isolation coop, so we will likely put her in it to keep an eye on her and feed her appropriate things.
What should we feed her? What should we check for?
What should we feed her? What should we check for?