So I have two human friendly hens but they just don't get along with any other chickens!!! Vivian(brahma) came from a huge flock with roosters and hens same goes with Nala(black sexlink) but two different flocks. Well I've been trying for two years now to get them buddies with my other chickens but nothing works I've tried night introduction day introduction pretty much any introduction you can think of I've done but nothing works! It doesn't matter the other chickens age nor sex Vivian and Nala hate them!!! I've gone thru 6 roosters one being a game rooster my friend gave me and they almost killed him so I gave him back to my friend and my friend said he's terrified of his other hens!!! I've had chickens for many years and none of them have been like this so I'm at a loss! Both hens are pets so killing is not an option neither is selling my question is could they have some kind of deficiency?