Need advise

[Itsallnaomi]

I live in Maine. My flock tolerates the cold pretty well. Although I had to bring a hen into the garage which is heated to heal from an injury. Now that she is all healed up can I put her back out with the flock even though she is used to being warm?

 

[Eggcessive]

How long has she been inside healing? Were any of the others responsible for injuring her? I would gradually get her used to lower temperatures until she can tolerate the cold. Then slowly bring her back into the flock, watching for any pecking or bullying. If she has only been gone a few days, you could do it more quickly. If she has been gone more than a week or two, a dog crate with food and water inside the coop might be a better way to reintroduce her.