I have a group of 2.5 month olds and 1.5 month olds now in the new coop and run i have but I'm thinking about buying these two 5 month old frizzle pullets from a local. After quarantine how would you guys recommend introducing? A small pen in the run and coop? Do you think they'll be to big for the others? ( everyone's a bantam ) and should the quarantine be a month?