I can't seem to find a daily value for calcium and D for adult squirrels. I know that when you add phosphorus you have to add more calcium to balance out the ratio. And during the winter months when there is no sun, what vitamin D is needed to process the calcium? I guess just feeding 2 HHB isn't the answer I'm looking for- I want to dig deeper and know more of WHAT values are needed. That is why I'm asking thanks !