One of my hens has been out of sorts for a few days. She has been roosting a lot more than usual. The past couple days she came out with the rooster and other hen in the morning, but would find somewhere outside to roost most of the day. Today she did not even leave the coop. I don't even know where to start with trying to find out what is going on with her. I'm going to quarantine her in a separate coop to see if she is eating and drinking. Should I try to give her any supplements? Is there anything else that I should start right away, or anything that I can check for? I cant say for sure when the last time she layed was, because we have a dog that sneaks into the barn and steals the eggs occasionally. Her abdomen did not feel swollen. My flock is only 2 hens and one rooster. They get let out in the morning to free range, and locked in at night. They're on Purina Layer feed currently, and have grit and oyster shell access. I'm just looking for a good place to start trying to figure out what is going on with her. So far her excessive roosting is the only symptom that I have noticed.