Grassy grazing expanses are large areas of land that are used for the purpose of grazing animals, such as cows, sheep, and horses. These areas are usually covered in grass and other vegetation, providing a natural food source for the animals. The term 'grassy grazing expanses' is often abbreviated to LEAS, which stands for Livestock Exclusion Areas. These areas are important for the conservation of wildlife and the protection of natural habitats.