According to Section 220.127.116.11 of the WHB Management Handbook, a minimum herd size of 50 breeding animals (total population size of 150 – 200 animals) is recommended to maintain an acceptable level of genetic diversity within reproducing wild horse herds.
Given an aimed-at stocking rate of one wild horse per thousand acres (27,000 animals on 27 million acres), every HMA should contain at least 150,000 acres.
How many of them fall short of that guideline? Have at it.
Don’t forget the WHTs.
A minimum recommended herd size for wild burros has not been established.