Wildlife corridors — strips of habitat connecting fragmented patches — are critical for allowing animals to move safely, find mates, access resources, and avoid the welfare harms of isolation.
Wildlife corridors address welfare harms at the population and individual level. For individual animals, fragmented landscapes force dangerous crossings of roads, fences, and hostile terrain. Vehicle strikes cause traumatic death and injury; entanglement in fencing causes slow death from exhaustion and exposure. Animals isolated in habitat patches cannot access mates, leading to behavioral frustration and reproductive failure. Reduced foraging range in isolated patches causes nutritional stress during resource-lean periods. Large carnivores like mountain lions, wolves, and bears that range over vast areas suffer acute welfare impacts from fragmentation — they are forced into repeated dangerous crossings or confined to insufficient ranges. Corridors restore movement freedom and eliminate many of these hazards, making them among the highest-impact landscape-level welfare interventions available.