Deer overabundance in the UK causes ecological damage and welfare problems from starvation and road collisions; humane management is contested and complex.
Deer in overpopulated areas experience chronic nutritional stress as winter food runs out. Road collision deaths cause traumatic injury and slow death. Injured deer not found by the vehicle driver may suffer for hours or days. Rifle culling causes immediate death when accurate but wounding occurs in a proportion of shots. Trap-and-cull operations cause significant capture stress. Predator reintroduction would cause individual deer predation suffering but regulate populations sustainably.