This is a good time of year to provide birth control to the mares, according to the writer.
We must reduce their reproduction rate to avoid BLM roundups. Interfering with nature is a good alternative.
Why was the area zeroed out for horses? Is it subject to permitted grazing?
How much forage has been allocated to the ranchers? How many horses would it support? Why aren’t you demanding changes to the management plan instead of shooting mares in the butt with contraceptives?