The Preliminary Environmental Assessment for the Blue Wing HMAP says on page 163 of the pdf that if some number of mares become sterile as a result of PZP treatment, that result would be consistent with the contraceptive purpose that motivates BLM’s use of the vaccine, and with Congressional guidance that condones such treatment in the management of wild horses and burros.
That statement makes the advocacy groups partners, not adversaries, of the bureaucrats and ranchers.
RELATED: Blue Wing HMAP Shows Advocates Ill-Informed About Wild Horses.
Western Horse Watchers Association 