Possible Clues:

• Tramping around over area that turns white in winter
• Grouse - giant pram (anag)
• Grouse-like bird
• Game bird extremely piquant, a margin for improvement
• Tramping out with a game bird
• Northern grouse
• In Grampian broadcast there's time for a grouse
• With a broken part, the fighter bird gets to an end
• Type of mountain grouse
• Game bird, white in winter