Pine marten populations are recovering in parts of the UK after near-extinction from persecution. Their return demonstrates how predator recovery improves ecosystem health and creates cascading welfare benefits.
Pine marten recovery projects involve capture, handling, health assessment, and translocation of wild animals — welfare costs that must be weighed against the long-term benefit of population restoration. Individual martens translocated to new areas face the challenge of establishing territories in unfamiliar landscapes. The benefit to the recovered population is genuine: animals living natural lives in appropriate habitat, fulfilling their ecological role, represents a welfare state superior to absence. The cascading effects on red squirrel welfare — reduction of grey squirrel competition through pine marten predation — represent secondary welfare benefits extending beyond the marten population itself.