Hello everyone, I've been blessed with a lovely chicken but would like to confirm its breed. I was told it was a RIR but I'm not sure because of its tail which has a darker colour to its rest of the body which could make it a NHR. Ive also included a closeup pic of its feathers under its neck. Is my chook a hen or rooster? may be about 6 months old, we don't know the exact age. Thank you in advance. I'm no expert and so appreciate everyone's experience.