Is it easy or hard to tell the gender of Blue Ameracauna's and Black Copper Marans? Mine are 2 weeks old, and it seems like the Marans are developing combs pretty fast, but the Ameracaunas, not so much. So I just wondered if that mattered or not. Does anyone know a lot about these two breeds? Thanks. (By the way, I want hens, will give away the roosters)