Wild horses in the US are protected but their management is controversial. Balancing population control, individual welfare, and ecosystem impacts requires evidence-based, humane approaches.
Wild horse welfare spans both the welfare of free-roaming horses facing starvation in overpopulated ranges and the welfare of horses captured, held, and processed through the BLM holding system. Helicopter roundups cause acute terror, injury, and death of some individuals. Long-term holding in crowded corrals denies horses meaningful freedom of movement and social choice. Fertility control through PZP vaccination is a humane, effective alternative to removal that reduces population growth without capture stress. Improving wild horse welfare requires transitioning from removal-dominant to fertility-control-dominant management, improving holding conditions for held horses, and increasing adoption success through training programs.