I'd give them at least a week. Maybe 2. If your leaving them full flight you want them to k now where home is for sure.So I have my flock on lock down with the new ones in to get them to figure out where home is. How long does it normally take? My first new batch we left penned up for over a month but it was the middle of winter and wouldn't have gone far anyway. It'll be really really nice out this week.