I hope I put this in the right place. Sorry if I didn't! I would love to have a few Silkies as part of my flock. I plan on having only females. The local feed stores here sell a few varieties of chicks that are already sexed. I have heard that w/Silkies it is nearly impossible to tell until they are older. I don't really want to chance getting a roo, so can I successfully add an older, already sexed Silkie to an existing flock? Do different breeds generally get along ok?