This will be my first winter with my three laying hens. I know that at some point, they will stop laying and molt. Do I feed them anything different during this time? They now have an automatic feeder with layer pellets & crumbles, plus daily scratch treats, plus some garden leavings (melon, zucchini, etc). Do I just keep up this same regimen all winter? Do they need anything additional to grow their new feathers?