I'm really wanting to add a white layer to my flock but from what I've read they are all on the flighty side and not fond of confinement. In your opinion, which white layers, if any, are the least flighty/ noisy and would do ok in a mixed backyard flock? and yes they are in a large coop and run the majority of the time. Also, which, if any, are an absolute no for my situation? Thanks in advance!