I have 11 young Muscovys and they are voracious eaters. They never stop eating. I thought they were supposed to be a duck that did well free ranging and fending on their own. They break into every coop given the chance and eat the chickens food--and that is after they have free ranged and eaten their own food. Am I going to have to continue feeding them forever or will they eventually learn to eat from nature for the most part?