That's interesting! I am new to chickens, but I've read in multiple sources that birds of a similar feather do flock together. I have a white Cochin. She's my only white pullet, but she's fully accepted. I raised them together, though. That must be the difference.Our original flock is very peaceful but contains no white birds. We tried to integrate 4 white birds and 1 that's ginger and blue. The ginger and blue one has been accepted no problem, even though she's a Silkie. The 4 white (non Silkie) birds are still needing their own separate space after 6 months or they are the recipients of some nasty comb pecking. I'm hoping when we move house and they are in a completely new space everyone just gets over it.
I had hoped to get more pullets come spring and get a variety of colors and types. The more I read, the more I think that may not be such a grand idea...