Game species are seldom the only grazing animals present, so domestic livestock must also be considered in game management. Keeping the numbers of breeding animals below the average carrying capacity of the range gives flexibility for dry years. Livestock numbers are more easily adjusted when needed than wild species. Reductions and additions in the game herds generally are limited to one time during the year, the hunting season and fawning period. A night counting of deer using a spotlight, or an aerial count with helicopter will give information on deer numbers and herd condition for planning this fall's harvest.
Young animals are the most sensitive to nutritional conditions.
Therefore, a low observed ratio of fawns to does during September will indicate poor food conditions. To be prepared for low forage growth each hunting season must be managed as though it is the one immediately proceeding a drought. Practicing some type of deferred rotation grazing system not only benefits livestock but also reduces competition for food since big game tend to move away from livestock into rested pastures. Rested pastures also benefit quail and turkey by providing nesting cover and allowing food plants to produce seeds. Poisonous plant problems are more likely to develop during or immediately following drought periods.