First question: I have an acre of land surrounded by a 6' solid fence. Will the hens be content to stay within the acre w/the chickens or will they hop the fence. I plan on getting two as keets and my broody orpington raising them. My neighbors have been tolerant of the chickens but I don't know about two guinea hens in their property. Second question: Can you hear their "buckwheat" an acre away? I apologize if these questions present themselves as idiotic but with neighbors even an acre away one can not be too careful. Thank you!!!