I'm not a chicken expert, I haven't been around chickens much, but i have got this adult hen off my dad and she mounts my other hen and she does the rooster "mating dance" plus she does the tidbit thingy to call in for treats. Her ring will come up and everything! She lays eggs almost daily. Actually she's my best egg layer! So is this very common? I heard they can turn into a rooster even? I find that hard to believe kinda. But anyways shes about 3 years old. Thanks guys!!