Hi! My name is Joanne. I am a total newbie to this forum and to raising chickens as well. I live in Vermont and have recently become involved with raising 12 Rhode Island Red Hens - at least that's what we ordered. They are now six months old and have started to lay eggs about two weeks ago, although not all of them are laying yet. We're up to ten of them laying! But I have often wondered if we have a secret rooster among our ladies. Recent behavior really made me question this. However, it's really hard to tell them apart. I've seen from pictures that the Rhode Island Red roosters grow this beautiful black plume of a tail. My question is this: At what age does that tail come into full maturity? If it's at six months, then we're OK. If it's later, then the jury is still out. Any feedback would be appreciated. Thank you!