Voles are among Britain's most numerous small mammals, supporting entire food chains. Their population dynamics and individual welfare are interconnected with broader ecosystem health.
Vole welfare illustrates the challenge of thinking about wild animal welfare at population scale. Population boom-and-bust cycles involve mass mortality from starvation, predation, and disease during crashes - affecting tens of millions of individuals. Individual voles experience predation (sudden death, often by highly efficient predators), starvation during population crashes, and parasitism throughout their short lives. The welfare-conservation nexus is clear: habitat that supports stable vole populations reduces the severity of crash-related starvation while supporting the predator species that depend on them.