Wild Horse and Burro Research

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Wild horses
Wild horses

Wild horse populations often increase at high rates on U.S. western rangelands, which in turn can lead to habitat degradation. The U.S. Geological Survey and the Bureau of Land Management are cooperating on studies investigating the potential of fertility control drugs to reduce foaling rates. In addition, because nearly every management issue concerning wild horses depends on accurate herd counts, USGS and BLM are testing several techniques that could improve population estimates and provide defensible error estimates (confidence limits).