The Willow Grouse, also known as the Willow Ptarmigan (*Lagopus lagopus*), is a medium-sized bird found in the northern regions of Europe, Asia, and North America. It is well-adapted to cold environments, featuring a feathered body that provides insulation and camouflage against snow. The bird's plumage changes with the seasons, turning white in winter and brown or mottled in summer. Willow Grouse primarily inhabit tundra and boreal forests, where they feed on a diet of leaves, buds, and berries. They are known for their distinctive calls and are often hunted for sport. Their populations are influenced by habitat changes and climate conditions, making them important indicators of environmental health.