Depends on the bird. I have a little Serama hen who can hang with the Cochins, but the other Seramas aren't able to blend in as well. My Silkie hen can be out with them as well, but she has befriended a Cochin hen, and they party togethr by themselves. So I'd say pick a good chicken to be your Silkie's first friend. Make it one of the more dominant hens, but not an aggressive one. Then integrate them back into the flock together. If the other birds see that your Silkie is the friend of one of the bosses, they may like your new bird. Just like high school: the cool kid befriends someone new, he automatically becomes cool as well!