Houdans are the reason I got chickens. They look so endearing with their top knots and beards. We have two hens for their eggs, Dorothy and Peppa. Dorothy has yellow legs and Peppa lacks a beard so they are just pet quality. They do suffer from 'feather blindness' so need a haircut after they moult, otherwise they become very flighty and can't eat properly. They are very docile and other than the houdans we have two araucana, and various bantams and they all get along just fine. I introduced one bantam pullet just a little while ago and had no problems with her integrating into the flock. I'm not sure who is the boss in the coop as they are all so docile.