Timings of antler-shedding by red deer were noted, as well as deer-beds and winter deaths of red deer. The author recounts some old published statements about sheep, deer and vegetation in the Highlands, and uses old sources to estimate the numbers of red deer in Scotland at low ebb in the 1780s. Next he collates field observations by several colleagues and himself on vertebrate animals in the Cairngorms. He documents the abundance of mountain hares amongst different areas, and changes in their numbers within study areas and across years. This leads to a chapter on recent reductions of mountain hares by heavy killing on grouse-moor estates.