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BLM Wild Horse & Burro Program LogoDesatoya Mountains Wild Horse Gather

The gather began August 16.

The gather concluded on Tuesday, August 21.

Goal of Gather:

BLM's goal is to leave a herd of approximately 253 wild horses which is above the appropriate management level of (127-180) wild horses.  The BLM intends to use continuous annual bait/water trapping over the next 10 years in order to administer the fertility control vaccine and remove small numbers of excess wild horses in order to achieve and/or maintain the AML range and sex ratio.

Details of the Gather:

BLM plans to humanely gather 450-525 wild horses and return to the range as many as 127 of the most suitable animals.  Approximately 398 excess wild horses will be removed from the range depending on gather efficiency.  Details of the gather are available on this website by following the links in the right column.  BLM invites the public to observe this gather and details are also availble regarding safety procedures and logistics. 


See the Adopting a Horse and Burro page.

Latest News:

For BLM news releases and statements issued about Desatoya Wild Horse Gather, check our Newsroom.


A population inventory conducted in July 2011 documented 543 wild horses within and 14 wild horses outside of the Desatoya Herd Management Area (HMA). It is projected that 651 horses would be in the population at the time of the gather. The Appropriate Management Level (AML) for the HMA is 127-180 wild horses. Based on the inventory, and monitoring data showing impacts from an over-population of the HMA, BLM has determined that removal of the excess wild horses is necessary to achieve a thriving natural ecological balance.

Of the approximate 127 wild horses released back to the range, an estimated 51 mares will receive a 22-month Porcine Zona Pellucida (PZP-22) immunocontraceptive vaccine treatment prior to release. This vaccine will extend the time between gathers, and reduce the number of excess wild horses that would need to be removed in the future. The sex ratio of the released animals will be dependent on the sex ratio of the gathered wild horses. Approximately 65% or more of all released wild horses would likely be stallions to achieve a 60% male sex ratio within the HMA (including animals not gathered).

For more information on the Wild Horse and Burro Program, call 1-866-468-7826 or email

Desatoya Mountains Wild Horses

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Cumulative Totals


Acute Condition Animal Deaths

Chronic/Pre-existing Condition Animal