"come back"

our guinea fowls are now able to free range safely. They are following around the big rooster like he's mama. Which is funny, because I was worried about protecting them from him. They are able to fly and roost up high in a tree, but they all make it back to the coop at night. I've been told the only way to tell if you have hens or cocks are by the sounds they make. They have just been cheeping up until a few days ago. Now you can hear "come back, come back" from the hens.