The red grouse ("Lagopus lagopus scotica") is a medium-sized bird of the grouse family which is found in heather moorland in Great Britain and Ireland. It is usually classified as a subspecies of the willow ptarmigan but is sometimes considered to be a separate species, "Lagopus scotica". It is also known as the moorcock, moorfowl or moorbird. "Lagopus" is derived from Ancient Greek (), meaning "hare", + (), "foot", in reference to the feathered feet and toes typical of this cold-adapted genus, and "scoticus" is "of Scotland".