Ok yesterday I gave my chickens a good source of calcium and they gobbled it up. I gave them a good bit of the stuff. They haven't laid any eggs in 4 months, due to mites, and losing 3 members of the flock. Some of the hens now have red combs, but the dominant hen still just has a pinkish comb, now she was very bad off from the mites, so I thought maybe she was keeping the others from laying. What do you think? Should I keep giving them more calcium, and if I do will it help kick them back in laying? Please, any help will be appreciated.