I've had a backyard flock for 4 years now, started with two orphaned chicks who grew up to be roosters (unfortunately no longer with me.) Currently my flock has 3 roos and 19 hens, oh and my peafowl pair and muscovy duck pair Anyway a few days ago I purchased 4 new hens from our county fair; a bearded belgium d'anver quail hen, a belgium d'uccle mille fluer hen, a speckled sussex hen, and a sicilian buttercup hen. As always, my other birds are bullying them a bit to show who's top rank of this roost! These hens all live with one half of my flock which is made up of 3 hybrid brown layers, 4 mut bantam hens, and 2 bantam mut roos. Yes theyre muts, but I love them. I cant even tell what they are mixes of because they are from a neighbor that had many breeds more than 20 years ago! Thats many generations of mixing going on! Should I be concerned about these hens and mixing them together? So far they get along and even sleep together. I was not really aware until recently that some breeds of chickens really just dont like being mixed with others? In case anyone is interested: The other half of my flock is made up of 1 mut bantam roo and 2 mut bantam hens, 1 silver-penciled hamburg hen, and 5 white rock hens. I have a good freind who has a backyard mixed flock of hens, geese, and ducks that is trading her bantam polish for two or three of my white rocks Thanks All! Happy Flocking!