My girls are soooo addicted to J. B.'s (as we call them) aka: Japanese Beetles, that I hope they have reduced next year's local population. Those beetles have destroyed our grape vines, elderberry shrubs and plum trees.This is out and out war! I figure the extra protein and minerals from the beetles must be good for them. These pullets are happy and healthy. However, what to do once winter arrives? Should I be switching their diet to more carbs? They will be on Layer mash soon but what should I add for those coming cold months here in Maine?