I have a single chick only a day old. My other chicks are now 7 weeks and outside in the coop. I am worried the single chick will be lonely and not learn basics by itself in the brooder box but I cant put it outside its too cold and its too small. Another problem is my other chicks were vaccinated against Mareks by the hatchery but this chick hasn’t. My vet doesn’t do vaccination so worried about it getting sick. Anyone have any advise I am not sure what to do.