Yeah, don't want weasels and stoats eating young grouse or pheasants, or dogs disturbing them. Much better to blast them out of the sky with a shotgun!
I have mixed feelings on this; if it wasn't for the shooting, we wouldn't have the moors. And it is a much better option than battery farming. It's just the controlling of all other wildlife and activity for the benefit of the birds I sometimes feel is a bit unbalanced.