In general, with pea combed breeds a pullet will have a single row of peas while cockerels will have 3.Also, I have 5 black pure ameraucanas that look like mostly Roos -8 weeks old. They are super friendly and really growing out beautifully. I'd love to rehome them, so if anyone is interested let me know. I'm sending pics to Jim today of them he said he'd help me sex them. I have a feeling at least 3 are Roos. He said he has a meat guy that will pick them up, that will be my last resort. I'm hoping someone on here will want them. I have lots of pics i took this morning if interested.