I recently rescued a two four day old chicks from Rural King. One of them did not survive but the other is thriving. He is an ISA. Right now we handle him often and have a fuzzy stuffed animal in the brooder to keep him company. I have 8 hens that are a year old. What is a safe age to introduce a single young roo to a flock of 8 hens? I know he needs to have his feathers in but since he is by himself will this cause problems in the future? Should I let them all get to know each other behind a fence? Looking for suggestions.