Right now I have some Barred Rock Hens--only three of them. My rooster and the rest of my hens died of some disease that some new hens brought in. Instead of getting more Barred Rocks I decided I would get some Salmon Faverolles. I only have one pen. Do you think I'll have to get rid of my barred rocks in order to safely have the Salmon Faverolles? I don't want mutt chickens, and I also don't want my barred rocks to pick on my Faverolles. (I read that Faverolles tend to be on the bottom of the totem pole)
Yes, Faverolles do have that reputation in some circles and it's not without merit from my perspective.
If I really wanted Faverolles and wanted to keep my three other hens, also, I would build my three hens a summer tractor.
Then I would put my Faverolles and Faverolle rooster in the main pen where everybody would be living in the fall. When the Faverolles were 6 months old, I would put the three other hens in the coop with the Faverolles. Or I'd still wait until the Faverolles were 6 mos. old, then I might have set up a system where I let the Faverolles out of the main coop all day and then with just one hour of daylight left, let out the other hens out of their summer tractor and then they may interact a bit. But everyone will go home to their own coop each night. Over time, the older hens might want to move in to the original coop. The Faverolles will think that the yard is theirs if they are out all day and the old hens only get out late, near sundown, which makes the older hens feel lower on the totem pole and the Faverolles feel high up on the pecking order.
Most likely, the Faverolle rooster would prefer the Faverolle hens and protect them from any of the shenanigans of the older hens. But I think he will have to be 6 months old to be able to withstand the possibility of being henpecked.
The Faverolles would know the coop well and feel that the older hens were intruders and would act like the top dogs (as much as Faverolles can).
I would have been letting out my Faverolles during the late summer and feeding sunflower seeds at the edge of the old hens' summer tractor (while the old hens were still in there) so that they could be pecking very closely face to face, all eating together, getting used to each other.
Yes, I would definitely get a rooster because without the rooster the older hens might just take back over things because many Faverolles hens are a little meek.
Anyway, that's how I would do it. Not sure if that's useful for your situation or not. But at least it's a way that sometimes works when one wants to work with the pecking order system in a positive way to get the results that will be good for all involved.