The Salt River advocates are trying to cut the herd size in half with PZP, as if they can put it into a nosedive for ten years and have it come in for a soft landing.
The Virginia Range advocates are trying to achieve a reduction of 80% or more with the same pesticide.
The herds will auger in.
The final populations will be zero because most of the mares will be sterile, if they aren’t already.
Those that bear fruit, not enough to overcome the death rate, likely have faulty immune systems, a trait that could be passed on to their offspring.
This is what the advocates bring to the table.
Western Horse Watchers Association 