usually you can mix any flock together as long as you don\'t have just one. having eaquel numbers or nearly equal wil prevent too much picking and or domination problems.
we mis large fowl and bantams too, but usualy only until fall, once we seperate them wo don\'t let the bantams back into the general population.
Cochen bantams are a lot larger than most bantams, and standard cochins are huge by comparison, but they are docile enough that their size shouldn\'t bee too much of a problem