We lost half our flock to a neighbors dog and she bought us some new chickens to help us replace them...before checking with us, we ended up with 5 new hens and another roo. Right now, they are in a hoop coop that is sitting inside our outside pen for all the chickens. The others go into the main coop at night, the newbies stay in the hoop coop. My questions are 1) how long do I keep them separated for "quarantine" and what am I looking for? and 2)how do I mix the two roosters? Right now, they are facing off each other on the other side of a fence (mighty funny, in fact!). The original roo, Tux, is growing back his tail feathers, but is the more aggressive of the two. Should I have my neighbor give back the other roo? The said they would take it back if needed. The newbie roo is pretty, however. How will I know they won't kill each other? I have had enough of doctoring up the chickens for a little while. Thanks to all who are willing to give advice. BTW, I am giving the newbies vitamins/electrolytes. I am getting only one egg a day from them, though they are supposed to be good layers. How long till they settle?