Wildlife corridors connect fragmented habitat patches, enabling animals to move, feed, breed, and respond to climate change. They are among the most cost-effective conservation and welfare interventions.
Wildlife corridors address welfare at two scales: individual animals that would die on roads or starve in isolated habitat patches, and populations that lose genetic diversity and resilience when cut off from conspecifics. Road kill represents welfare harm at a scale rarely acknowledged — a million animals killed per hour means billions of painful, stress-filled deaths annually. Corridor infrastructure that prevents this is a welfare intervention with effects equivalent in scale to improvements in farming systems. The cost-effectiveness of corridor creation — measured in animal lives and years of suffering prevented per pound invested — makes it a priority for wildlife welfare philanthropy.