Grouse are a type of game bird that are indigenous to the cooler climates of the northern hemisphere. These birds are closely related to pheasants, and are known for their distinctive appearance and delicious meat. In the United States, two of the most well-known types of grouse are the ruffed grouse (often referred to as partridge) and the prairie chicken, as well as the sage grouse, which is native to the western part of the country. Another type of grouse, the ptarmigan, is typically found in arctic and subarctic regions, and is known for its ability to change color from brown to white during the winter months. In Great Britain, the red grouse (which is actually a type of ptarmigan) is particularly prized for its flavorful and tender meat, making it a favorite among hunters and gourmands alike.