The Willow Ptarmigan is a medium-sized bird found in the northern regions of North America, Europe, and Asia. It is well-adapted to cold environments, with a thick layer of feathers that provides insulation. The bird has a distinctive seasonal plumage, turning brown in summer to blend in with the tundra and white in winter for camouflage against the snow. This species primarily feeds on leaves, buds, and berries, making it an herbivore. The Willow Ptarmigan is also known for its unique courtship displays during the breeding season. It plays a crucial role in the ecosystem, serving as prey for various predators, including foxes and birds of prey.