My RIR seems to have quit growing. She's about the same size she was at 4 months. Here's a pic of her now, at 6.5 months. Her comb is at the same size now as it was at Christmas. Is she just a runt, is she sick? Am I just a worrier? At one point in time she was the same size as my other birds of different breeds, but they kept growing and she didn't.