The twelfth of August is the red-letter day of the field-sports calendar for it marks the opening of the grouse shooting season. Clare Balding traverses the heather moors of Scotland with gamekeeper Peter Frasertohearthe story of the "Glorious Twelfth". Gamekeepers and landowners reveal whether shooting game is a thriving industry or, as stated by a character in the BBC series Monarch of the Glen, a "bizarre, feudal relic". Producer SimonCrosse