Why do my chickens eat rocks?

So, where does this grit come from? As they forage, chickens naturally consume small pieces of rock, grit and/or gravel, and those pieces pass through their digestive system and lodge in their gizzard, where they chew up the seeds, grains, bugs, and grasses that they eat. read more

If your chickens eat only commercially processed feed, the need for grit and rocks would not be as great, as this feed is easily digested. But if they are eating any other foods, or if you feed them greens, veggies, or any other scraps, they will definitely need some grit and rocks in their diet. read more

Chickens eat rocks (usually called grit -- they probably sell this at your feed store). Those rocks collect in the gizzard and when the food passes through that muscle grinds the little rocks against the food to "chew" it and break it down. read more