Funnily enough, ground birds like chickens and quail do need to eat small rocks or sand. That helps grind up food in the gizzard. I had quails, and the hens ate

Funnily enough, ground birds like chickens and quail do need to eat small rocks or sand. That helps grind up food in the gizzard. I had quails, and the hens ate pieces of oyster shell. That also gave them enough calcium to lay an egg almost every single day.