I was given 14 chickens; "rescue chickens," I suppose, to save them from the stew pot. They are currently cooped by themselves, but their pen is not tall enough to allow them to have room to fly up to roost at night. I want to integrate them with other chickens asap so that they will have access to good roosts. The main roost house is directly next to the temporary pen that they're in now, just a few feet away. But if I let them go after having them just a few days, I'm not sure where they would try to go at bedtime, and I don't want to chase them who knows where! So, my question is, how long do I need to keep them in this new home before they will come back to the same spot when it's time to go to roost?