willow ptarmigan Directory References Images Quizzes U.S. State Bird Quiz Discover The Largest Islands in the World 26 Decade-Defining Events in U.S. History 7 of History's Most Notorious Serial Killers Is Australia an Island? New Seven Wonders of the World Ten Days That Vanished: The Switch to the Gregorian Calendar 7 Everyday English Idioms and Where They Come From willow ptarmigan bird Ask the Chatbot a Question Also known as: Lagopus lagopus, willow grouse Learn about this topic in these articles:description In ptarmiganAlso distributed circumpolarly is the willow ptarmigan, or willow grouse (L. lagopus), a more northerly bird of lowlands. On Rocky Mountain tundra south to New Mexico is the white-tailed ptarmigan.Read More