Hello duck owners - I have three female runners that are a few days away from 20 weeks old, so seemingly on the cusp of being in the egg-laying age range. However, it’s also almost December and we are in western VA so it’s chilly and obviously days are getting quite short. Has anyone experienced their ladies laying at this time of year or should we expect spring for the first eggs? Should I provide free choice oyster shell/calcium just in case? They are currently eating Mazuri waterfowl maintenance food. Thanks!