I will soon be separating my cockerels and pullets from this summer's hatches into their own coops and runs. I have one unlucky gal who is in with 6 cockerels. They are a mix of 9 1/2 week olds and 11 week olds so they aren't bothering her yet... I just feel bad she doesn't have a hatchmate or "buddy" I can move with her. I'll be putting her (who is 9 1/2 weeks old) in with four 8 week old pullets that are already together. Do I need to do a slow integration with her like I would with adult birds, or can I just put her in one night after dark with the others since they are so young?