i have about 10 ducks now, with 5 drakes, i started having eggs about a month ago about 3 a week. from 5 ducks in the flock. i added another 5 more ducks about 2 weeks ago and i haven't a eggs since, what am i doing wrong, now it is getting down to about 20 at night but they still seem very happy and both flocks are starting to group together. what can i do to get more eggs. i feed them a grain mix i made, 250 lbs whole milo, 125 lbs oats, 125 rolled corn, and 50 lbs layer pellets and had feed mill mix that ration for me. any help with twicking the mix would be great as well.