Black Grouse

Wonder how accurate article in todays Telegraph is where it states Black Grouse is a red listed bird as a result of habitat loss and increasingly intensive agriculture.Bird books I have all state that this bird is a moorland bird and there are many thousands of acres of moorland that surely are good for Black Grouse with none there,for instance doubt if any are any on Derbyshire Peak District moors.Wonder if this old habit of blaming increasingly intensive agriculture is stopping us getting the answer to the real problem.All the moors that I have seen from Dartmoor to Scotland could not be labelled intensive agriculture even by someone with massive imagination.