All rights reserved. Tens of thousands of wild horses roam the American West, and the ecological consequences of their increasing numbers could be dire. Here are some solutions for keeping herds and rangelands healthy. The ecological consequences of mismanagement are staggering. So, what are the options, and what is realistic? PZP is about 90 percent effective at preventing pregnancies. The mares have to be given a primer dose, a booster dose four to six weeks later, and additional boosters every year after that. Successful PZP programs are typically smaller herd areas with easily identified horses and passionate local volunteers. For PZP fertility control to be effective on a herd numbering thousands of horses, the animals would have to be gathered via helicopter, processed and given the two PZP doses, and then released back into the wild.
Broadly, the law declares wild horses and burros to be "living symbols of the historic and pioneer spirit of the West" and stipulates that the BLM and the U. Forest Service have the responsibility to manage and protect herds in their respective jurisdictions within areas where wild horses and burros were found roaming in To maintain wild horses and burros in good condition and protect the health of our public lands, the BLM must manage the population growth of wild horse and burro herds.
The wild horse Equus ferus is a species of the genus Equus , which includes as subspecies the modern domesticated horse Equus ferus caballus as well as the undomesticated tarpan Equus ferus ferus , now extinct , and the endangered Przewalski's horse Equus ferus przewalskii. Przewalski's horse had reached the brink of extinction but was reintroduced successfully into the wild. The term "wild horse" is also used colloquially in reference to free-roaming herds of feral horses such as the mustang in the United States,  the brumby in Australia,  and many others. These feral horses are untamed members of the domestic horse subspecies Equus ferus caballus , not to be confused with the truly "wild" horse subspecies extant into modern times. In general, wild horses are grazers that prefer to inhabit open areas, such as steppes and grasslands.
All rights reserved. Parker Flannery, a close friend of mine, proposed that we drop out of school, adopt wild horses, and attempt to traverse the Continental Divide Trail. Being 20 years old and in way over our heads, we adopted the biggest, stoutest, and most dominant horses they had available. The trip completely changed my life. Being from Texas, where there is virtually no public land, I was blown away by the sheer size and majesty of our vast public lands in the American West. I was equally as amazed—and shocked—at the plight of the wild horses and burros. In there were nearly 31, wild horses and burros in government holding facilities and 37, in the wild—in an area that supposedly had enough forage for only 27, horses. Numbers have grown steadily since then. Wanting to find homes for the horses in the government holding pens, I gathered three friends and planned to do another long ride to promote wild horse adoptions—this time going all the way from Mexico to Canada through the most backcountry route left in the American West. To raise awareness, we created a documentary, Unbranded.