I've only had chickens for a short time, but I've found that in the winter, the chickens seem to struggle nutritionally. They start to pick at each other and eatting feathers. They are gobbling down calcium like it's candy. This leads me to assume that their feed is not fully meeting their needs. I've added Avia Charge 2000 to their water, black oiled sunflower seeds to their scratch, and lots of calcium to their free choice feeder. But still I'm worried about these girls. They don't get as many treats in the winter, because not much is readily available. My questions is, what can I be feeding them, thats going to fill in their nutritional gaps? And what can I plant in the garden this year, that will save over winter to aid them next winter? I've got lots of winter squash saved but is there other stuff I could be storing. I need to cut feed costs as well, so what are really good items to grow to do that during the summer that isn't feeding empty foods?