I have 3 RIR hens, 1 Barred PR hen and unfortunately 1 Ameraucana Rooster. They are all the same age, 8-9 months old. 2 of the RIR have been laying several months and the PR about one month. One RIR hasn't matured like the others. She has a very tiny comb and wattles, however she is the largest of the hens. She is not laying. The rooster is constantly harassing the other hens, but leaves this one alone. I was wondering if anyone knew what could be wrong with her. Are some hens just duds? At this age, I'm positive she is not a rooster.