The Checkerboard region in Wyoming includes five separate Herd Management Areas (HMAs), Adobe Town, Salt Wells Creek, Great Divide Basin, White Mountain and Little Colorado, and spans 3.4 million acres. The BLM’s unscientifically low Appropriate Management Level (AML) for the HMAs – the number of horses the agency claims that the range can sustainably support in conjunction with other animals and resource uses – is just 1,550–2,165 horses. This population limit was established based on the allocation of 91% of available forage in these areas to cattle and sheep, privately owned by the Rock Springs Grazing Association.

Full report on all horses in the link below.

https://americanwildhorsecampaign.org/media/roundup-report-wild-horses-wyoming-checkerboard