I have been building new breeding pens and will be moving everyone in the next week hopefully I have read posts about moving new birds in at night, but this whole thing will be new. Should I move the roos first and then add their new pullets or add them all at once, should I do this at night or what? I don't want any more fighting than I have to have so any advice will help. Moving 50-60 birds total. The pens have poultry netting type dividers so they will be able to see each other... so some fighting between pens my even happen. Any help or advice will be appreciated thanks.