The welfare dilemmas of managing feral horse populations in North America and Australia, including roundups, fertility control, and habitat capacity.
Wild horse management involves genuine welfare trade-offs between the acute stress of management interventions and the chronic welfare costs of overpopulation — starvation, disease, and overgrazing that ultimately harms all species in the habitat. Helicopter roundups cause acute terror and physical injury, and holding facilities create chronic stress for animals suddenly confined after years of free-ranging. Fertility control via vaccine dart is far less invasive and, when applied consistently, can stabilize populations without the welfare costs of roundups. The welfare case for fertility control as the primary management tool is strong, but it requires consistent, well-resourced field application that remains politically and financially challenging.