I'm busy learning and planning for my flock of chickens, and this site has been MOST helpful, especially the "things I've learned while building my coop" thread (highly reccommended, newbies go to https://www.backyardchickens.com/forum/viewtopic.php?id=140561&p=1 ). So, while I plan to build a coop for my 8-10 birds, once they mature they will share a run (or free range with) my dad's 3 hens. Once the fence between them comes down, what will happen? Will my birds join his coop, his come to mine, or every girl stay where they are? Or, if I want to empty my coop to brood more chicks, will my flock roost in his coop happily? (Plenty of room in his coop). Also, we have two roosters that free-range (they roost in the tree, and have the run of the farm), will they co-exist with my new girls, or is this a wait and see situation? One interesting thing, I see often that roosters won't get along, especially if they don't have enough hens to go around. Our two roosters are best buddies, hanging out together almost all the time. And they have no access to the ladies right now, except for the occasional time a hen gets out or a rooster gets into the pen. Is this normal? Thanks for the advice!