_Lagopus scoticus_, the Red Grouse or Muirfowl, the only bird entirely confined to our islands, differs from its congeners in never becoming white in winter. It varies considerably in coloration,[168] but is usually considered a local form of the Willow Grouse (_L. albus_) of the north of Europe, Asia, and America. The male in both summer and winter is more or less chestnut-brown above, with black markings and a reddish head; the lower parts are similar, but are usually spotted with white. In autumn the brown of the upper parts becomes buff, and the lower surface is barred with buff and black. Mr. Ogilvie Grant[169] recognises three types of plumage in the male, a red form with no white spots, from Ireland and Western Scotland; a blackish variety comparatively rarely found; and another largely spotted with white below or even above. Intermediate specimens constitute the bulk of our birds. The female exhibits, moreover, a buff-spotted and a buff-barred form; but in summer she is typically black above with concentric buff markings, and buff below with black bars. Her autumn plumage, which continues throughout the winter, is black, spotted with buff and barred with rufous. {239}[Illustration: FIG. 48.–Red Grouse. _Lagopus scoticus._ × ¼.] Little need be said of the habits of this well-known species, nor will space allow of a description of the methods of killing it by driving and so forth; but it may be observed that it utters a clear ringing note, us well as the familiar cok-cok-cok, and feeds upon grain and tender shoots of ling (_Calluna_) and heather (_Erica_), besides other plants. The nest of moss, grass, and the like is placed amidst heather, and contains from six to ten, or even more, yellowish-white eggs, thickly blotched and spotted with fine red-brown, purplish, or black. In England the Red Grouse is found as far south as Derbyshire and Shropshire, in Wales to Glamorgan; while unsuccessful attempts have been made to introduce it into Surrey and elsewhere. In Ireland it is rather thinly distributed, but in Scotland it reaches the Orkneys, and an occasional brood has been known to be reared in Shetland, where a few pairs were turned down between 1858 and 1883. It has also been acclimatized in Southern Sweden. _Lagopus albus_, the Willow Grouse of Northern Europe, Asia, and America, termed the "Dal-riporre" in Scandinavia, is completely white in winter, except for the lateral rectrices, which are chiefly black; in summer it resembles the Red Grouse, but is distinguished by the white wing-quills. The female is smaller. The habits {240}are similar to those of the last-named, but a preference is shewn for willow- and birch-scrub; shoots of these trees or of _Vaccinium_, with various moorland berries, furnishing the food. A performance recalling the "lek" of the Capercaillie is said to be given by the male in spring, a fact also true of the succeeding species.[170] _L. mutus_, the Ptarmigan or