Bats face multiple welfare threats from habitat loss, disease, wind energy, and persecution — despite providing ecosystem services worth billions of dollars annually.
Bat welfare intersects with conservation in ways that make individual welfare inseparable from population-level outcomes. White-nose syndrome causes mass mortality events where millions of individual bats experience disease suffering — weight loss, dehydration, repeated premature arousal from hibernation that depletes fat reserves before spring. The welfare cost is compounded by ecological scale: affected species are dying in millions, and their ecosystem functions are being lost simultaneously. Wind turbine fatalities involve barotrauma — internal hemorrhage from rapid air pressure changes near turbine blades — a welfare-significant cause of death for individual bats. Maternity colony disturbance causes acute abandonment stress and pup starvation. The welfare case for bat conservation is therefore both direct (reducing individual suffering) and ecosystem-linked (preserving populations that control insect populations including disease vectors).