Wild horse populations in North America and Australia face welfare problems from overpopulation. Immunocontraception offers a humane alternative to lethal control and roundups.
Wild horse welfare is compromised by overpopulation that leads to starvation, range degradation, and water competition. Traditional helicopter roundups cause significant stress, injury, and mortality. Immunocontraception programs have proven effective at stabilizing populations with far lower welfare costs — darting mares from horseback or on foot minimizes stress compared to roundups. Long-term contraception programs reduce the need for removals and allow horses to live out their lives on the range.