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Burros on the range

2020 Outside Cibola-Trigo Nuisance Gather (Yuma Proving Grounds)

Purpose of Gather

The purpose of this gather is to remove nuisance horses and burros that are damaging private property and creating a public safety hazard for motorists along roadways. The Bureau of Land Management has received complaints from private landowners and Yuma Proving Grounds (YPG), pertaining to numerous wild horses and burros that are creating public safety and nuisance situations on private land, YPG land, and U.S. Highway 95.

Details of Gather

The BLM plans to remove 35 nuisance wild burros and 40 nuisance wild horses from private and YPG land within the Cibola-Trigo Herd Management Area (HMA) between the months of April 2020 and July 2020 via bait trapping, water trapping, or both. A contractor and BLM staff will set temporary traps on private and YPG lands. They will remove the panels, hay, and manure once the trapping is complete. For the purpose of this gather no burros or horses will be treated with fertility control. The Yuma Field Office will oversee all trapping operations.

Public Observation

There will be no public viewing opportunities for this gather due to the nature of the gather.

Adoption Information

How to Adopt

Animals removed from the Cibola-Trigo HMA will be made available for adoption at the Florence Wild Horse and Burro Training and Off-Range Corral in Florence, Arizona, through the Wild Horse and Burro Adoption Program. Those that are not adopted will be cared for in off-range pastures, where they retain their “wild” status and protection under the 1971 Wild Free-Roaming Horses and Burro Act.


The Cibola-Trigo HMA is in southwestern Arizona, north of Yuma. The area parallels the eastern shoreline of the Colorado River for approximately 60 miles, from Yuma to Ehrenberg. The estimated population for this HMA as of March 2020 is 616 wild burros and 274 wild horses based on various analytical population count data and reports.