Many such stories can still be heard from hunters in completely different regions of Russia. Here and there, when gutting game (grouse, grouse, ducks, pheasants, hazel grouse), the grains and small gold nuggets are found in its stomachs. So how does this wealth enter the avian organism?
Everyone knows that birds have no teeth. But they have a special organ - a muscle stomach. To make solid food, like grain, easier to digest, birds have to swallow small pebbles. These stones during contraction of the stomach grind food, thereby fulfilling the role of teeth.