My rooster was just killed. I believe by a Coyote but I am not sure. He and my three hens have full roam of two acres. He was kind of an ass but I liked him and the hens seem to be lost without him. Can I replace him with an adult Roo or will that cause all kinds of turmoil? Can I replace him with a young Roo? If so How do I go about finding (sexing) a young roo?