With the grouse shooting season upon us once more, environmental campaigner Dr Mark Avery asks for support from walkers. We all head into the hills to get away from it all, to refresh our souls and to get back to nature. But the hills of much of east and south Scotland and the north of England, even in National Parks such as the Cairngorms National Park and the Yorkshire Dales National Park, are landscapes subjugated to the interests of one narrow land use: intensive grouse shooting. Concern, alarm and anger are growing over grouse shooting, and there are things that…