My ducks have been laying consistently all winter as we supplemented their light until about 6 weeks ago. We are no longer supplementing their light, and days are longer, and they are still laying consistently (except they seem to miss one day a week as they always have), but the eggs are smaller. I have recently changed their food - two weeks ago (which I will be changing back - not happy with new food at all as duck waste has increased drastically). They are getting greens and oyster shell, not getting as much free range time as I am now working two jobs. Is it likely to be the food that results in smaller eggs, lighting change (thought that would just make them stop laying not smaller eggs), or ?