I am getting a little more serious with my chickens. I've decided that I like them enough to make them a permanent part of the farm. That being said, I do everything on my farm in house. I don't buy any feed for any of my animals. If it can't be grown or raised here from just what comes out of the ground I don't want to have it. I want to be completely 100% sustainable. That being said, what can I do to add calcium to my chicken's diet? I know that everyone recommends oyster shell, but I don't have any oysters on the farm LOL. Are there any foods that I can grow that are high in calcium? Is it even necessary? The chickens will be pastured using electric netting. They will get to "graze" behind the cows and the sheep. So, hopefully they will find their shares of fly larvae and what not along with whatever other critters there are. I am also raising dubia roaches and red wiggler worms. There is going to be no problems with protein. I am going to grow an acre or two of reids yellow dent corn. I only plan on using it to get the chickens to go into the "egg mobile" when I need to move them and maybe for a little extra energy on cold nights. I live in Georgia so I don't think that will be an issue really. So, any ideas on calcium? With the foods that I have listed above do you think that they will need it? I planned on saving all of the egg shells and using them to add calcium back into the diet. What about bone meal? There are always plenty of bones left over from cattle and sheep. I might as well put them to use. I know that this is a long winded post. Thanks for bearing with me.