i have a couple of ducks in my brood. i started out with seven(4 boys, 3 girls) then my friend had to give me her last two which were both males. now i have 2 males for every 1 female and my girls are all going bald on their backs and the backs of their necks. i don't have the heart to cull any of them any even if i did, how would i choose which ones to get rid of? i'd rather find them new homes but i would still have the same problem. if i were to get more girls how many would i need? what's a good female to male ratio?