I do have 3 black hens and when I breed my blue rooster to my white frizzle hen they almost always have black chicks. The only rooster I have is the blue one though. The blacks I have are his daughters. Rooster just won grand at a show and one of the daughters won best feather leg hen
I will ship eggs to ft Pierce, I live a couple hours from there I have bantam crosses and standard crossbreds and bantam cochins and yes it is perfectly fine to breed them with the polish
Just wanted to let y'all know if anybody is looking for hatching eggs send me a pm. They're normally just mixed breeds but if you want a specific breed that I have I might be able to separate the birds for awhile :D:)
ETA: here's a thread I made...