Feral horse populations exist globally, from American Mustangs to Australian Brumbies. Managing these populations humanely while addressing ecological concerns requires welfare-centered approaches.
Feral horse management involves welfare tensions between the welfare of individual horses and the ecological health of landscapes where populations have grown beyond carrying capacity. Helicopter round-ups cause acute severe stress, injuries, and separation of social bonds. Holding facilities after capture provide inadequate environments for wild horses with strong space and social needs. The welfare case for fertility control as the primary management tool is strong: PZP vaccination causes minimal welfare harm compared to round-up while reducing population growth. However, vaccination programs require repeated access to free-ranging animals, which is logistically challenging at scale. The welfare advocate position is to push for non-lethal management while acknowledging that ecological balance affects wild horse welfare through starvation when populations exceed carrying capacity.