Hi, Maybe I didnt read your message right but there's got to be a rooster in there somewhere. I would say you have six layers and one imposter!
"five laying hens, all hybrids. Despite being told that hybrids don't get broody, one of ours got all maternal and successfully hatched a clutch of four chicks for us in the summer. All girls can you believe??? Two Lavender Leghourns, a Black Orpington and a Cream Legbar, all of whom are now laying too! A fox got two of our girls a couple of months ago so we now have seven layers."