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A feral horse is a free-roaming horse of domesticated stock. As such, a feral horse is not a wild animal in the sense of an animal without domesticated ancestors. However, some populations of feral horses are managed as wildlife, and these horses often are popularly called "wild" horses. Feral horses are descended from domestic horses that strayed, escaped, or were deliberately released into the wild and remained to survive and reproduce there. Away from humans, over time, these animals' patterns of behavior revert to behavior more closely resembling that of wild horses. Some horses that live in a feral state but may be occasionally handled or managed by humans, particularly if privately owned, are referred to as "semi-feral".
Feral horses live in groups called a herd, band, harem, or mob. Feral horse herds, like those of wild horses, are usually made up of small harems led by a dominant mare, containing additional mares, their foals, and immature horses of both sexes. There is usually one herd stallion, though occasionally a few less-dominant males may remain with the group. Horse "herds" in the wild are best described as groups of several small bands who share the same territory. Bands are normally on the small side, as few as three to five animals, but sometimes over a dozen. The makeup of bands shift over time as young animals are driven out of the band they were born into and join other bands, or as young stallions challenge older males for dominance. However, in a closed ecosystem (such as the isolated refuges in which most feral horses live today), to maintain genetic diversity, the minimum size for a sustainable free-roaming horse or burro population is 150–200 animals. [1]
The best-known examples of modern day "wild" horses are those of the American West. When Europeans reintroduced the horse to the Americas, beginning with the arrival of the Spanish conquistadors in the 15th century, some horses escaped and formed feral herds known today as mustangs. Isolated populations of wild horses occur in a number of places in the United States, including Assateague Island off the coast of Virginia and Maryland, Cumberland Island, Georgia, Vieques Island off the coast of Puerto Rico, and Sable Island off the coast of Nova Scotia, Canada. Some of these horses are said to be the descendants of horses that managed to swim to land when they were shipwrecked. Others may have been deliberately brought to various islands by settlers and either left to reproduce freely or abandoned when assorted human settlements failed.
Many prehistoric horse species, now extinct, evolved in North America, but the wild horses of today are the offspring of horses that were domesticated in Europe. [2] In the Western United States, certain bands of horses and burros are protected under the Wild and Free-Roaming Horses and Burros Act of 1971. There are about 300,000 horses today in multiple land jurisdictions across the country, including tribal lands. [3]
The only truly wild horses in existence today are Przewalski's horse native to the steppes of central Asia.
A modern wild horse population (janghali ghura) is found in the Dibru-Saikhowa National Park and Biosphere reserve of Assam, in north-east India, and is a herd of about 79 horses descended from animals that escaped army camps during World War II. [4]
In Portugal, a population of free-ranging horses, known as garrano , lives in the northern mountain chains.
In County Kerry, Ireland, wild bog ponies have been known since at least the 1300s.
More than 700 feral wild horses live in the foothills of Cincar Mountain, between Livno and Kupres, Bosnia and Herzegovina, in an area of roughly 145 km2 (56 sq mi). These animals, which descend from horses set free by their owners in the 1950s, enjoy a protected status since 2010. [5]
In Sardinia lives the Giara Horse, a wild species which inhabits the Giara di Gesturi, a basaltic plateau in the southern central part of the island. The population is composed by about 700 horses. [6]
Australia has the largest population in the world, with about 400,000 horses. [7] The Australian name equivalent to the mustang is the brumby, descendants of horses brought to Australia by British settlers. [8] [9]
Modern types of feral horses that have a significant percentage of their number living in a feral state, though domesticated representatives may exist, include these types, landraces, and breeds:
In the United Kingdom, herds of free-roaming ponies live in apparently wild conditions in various areas, notably Dartmoor, Exmoor, Cumbria (Fell Pony), and the New Forest. Similar horse and pony populations exist elsewhere on the European continent. These animals, however, are not truly feral, as all of them are privately owned, and roam out on the moors and forests under common grazing rights belonging to their owners. A proportion of them are halter-broken, and a smaller proportion broken to ride, but simply turned out for a while for any of a number of reasons (e.g., a break in training to allow them to grow on, a break from working to allow them to breed under natural conditions, or retirement). In other cases, the animals may be government-owned and closely managed on controlled reserves.
Feral populations are usually controversial, with livestock producers often at odds with horse aficionados and other animal welfare advocates. Different habitats are impacted in different ways by feral horses. Where feral horses had wild ancestors indigenous to a region, a controlled population may have minimal environmental impact, particularly when their primary territory is one where they do not compete with domesticated livestock to any significant degree. However, in areas where they are an introduced species, such as Australia, or if the population is allowed to exceed available range, there can be significant impacts on soil, vegetation (including overgrazing), and animals that are native species. [8]
If a feral population lives close to civilization, their behavior can lead them to damage human-built livestock fencing and related structures. [9] In some cases, where feral horses compete with domestic livestock, particularly on public lands where multiple uses are permitted, such as in the Western United States, there is considerable controversy over which species is most responsible for degradation of rangeland, with commercial interests often advocating for the removal of the feral horse population to allow more grazing for cattle or sheep, and advocates for feral horses recommending reduction in the numbers of domestic livestock allowed to graze on public lands.
Certain populations have considerable historic or sentimental value, such as the Chincoteague pony that lives on Assateague Island, a national seashore with a delicate coastal ecosystem, or the Misaki pony of Japan that lives on a small refuge within the municipal boundaries of Kushima. These populations manage to thrive with careful management that includes using the animals to promote tourism to support the local economy. Most sustained feral populations are managed by various forms of culling, which, depending on the nation and other local conditions, may include capturing excess animals for adoption or sale. In some nations, management may include the often-controversial practice of selling captured animals for slaughter or simply shooting them. [19] Fertility control is also sometimes used, though it is expensive and has to be repeated on a regular basis. [20]
A feral animal or plant is one that lives in the wild but is descended from domesticated individuals. As with an introduced species, the introduction of feral animals or plants to non-native regions may disrupt ecosystems and has, in some cases, contributed to extinction of indigenous species. The removal of feral species is a major focus of island restoration.
The Konik or Polish Konik, Polish: konik polski, is a Polish breed of small horse or pony. There are semi-feral populations in some regions. They are usually mouse dun or striped dun.
The tarpan was a free-ranging horse subspecies of the Eurasian steppe from the 18th to the 20th century. It is generally unknown whether those horses represented genuine wild horses, feral domestic horses or hybrids. The last individual believed to be a tarpan died in captivity in the Russian Empire in 1909.
The mustang is a free-roaming horse of the Western United States, descended from horses brought to the Americas by the Spanish conquistadors. Mustangs are often referred to as wild horses, but because they are descended from once-domesticated animals, they are actually feral horses. The original mustangs were Colonial Spanish horses, but many other breeds and types of horses contributed to the modern mustang, now resulting in varying phenotypes. Some free-roaming horses are relatively unchanged from the original Spanish stock, most strongly represented in the most isolated populations.
Kaimanawa horses are a population of feral horses in New Zealand that are descended from domestic horses released in the 19th and 20th centuries. They are known for their hardiness and quiet temperament. The New Zealand government strictly controls the population to protect the habitat in which they live, which includes several endangered species of plants. The varying heritage gives the breed a wide range of heights, body patterns and colours. They are usually well-muscled, sure-footed and tough.
Colonial Spanish horse is a term for a group of horse breed and feral populations descended from the original Iberian horse stock brought from Spain to the Americas. The ancestral type from which these horses descend was a product of the horse populations that blended between the Iberian horse and the North African Barb. The term encompasses many strains or breeds now found primarily in North America. The status of the Colonial Spanish horse is considered threatened overall with seven individual strains specifically identified. The horses are registered by several entities.
Assateague Island is a 37-mile (60 km) long barrier island located off the eastern coast of the Delmarva Peninsula facing the Atlantic Ocean. The northern two-thirds of the island are in Maryland, and the southern third is in Virginia.
The Exmoor Pony is a British breed of pony or small horse. It is one of the mountain and moorland pony breeds native to the British Isles, and so falls within the larger Celtic group of European ponies. It originates on, and is named for, the Exmoor area of moorland in north-eastern Devon and western Somerset, in south-west England, and is well adapted to the climate conditions and poor grazing of the moor. Some still live there in a near-feral state, but most are in private ownership.
Assateague Island National Seashore is a unit of the National Park Service system of the U.S. Department of the Interior. Located on the East Coast along the Atlantic Ocean in Maryland and Virginia, Assateague Island is the largest natural barrier island ecosystem in the Middle Atlantic states region that remains predominantly unaffected by human development. Located within a three-hour drive to the east and south of Richmond, Washington, Baltimore, Wilmington, Philadelphia major metropolitan areas plus north of the several clustered smaller cities around Hampton Roads harbor of Virginia with Newport News, Hampton, Norfolk, Portsmouth, Chesapeake and Virginia Beach. The National Seashore offers a setting in which to experience a dynamic barrier island and to pursue a multitude of recreational opportunities. The stated mission of the park is to preserve and protect “unique coastal resources and the natural ecosystem conditions and processes upon which they depend, provide high-quality resource-based recreational opportunities compatible with resource protection and educate the public as to the values and significance of the area”.
The Nokota horse is a feral and semi-feral horse breed located in the badlands of southwestern North Dakota in the United States. The breed developed in the 19th century from foundation bloodstock consisting of ranch-bred horses produced from the horses of local Native Americans mixed with Spanish horses, Thoroughbreds, harness horses and related breeds. The Nokota was almost wiped out during the early 20th century when ranchers, in cooperation with state and federal agencies, worked together to reduce competition for livestock grazing. However, when Theodore Roosevelt National Park was created in the 1940s, a few bands were inadvertently trapped inside, and thus were preserved.
A semi-feral animal lives predominantly in a feral state but has some contact and experience with humans. This may be because it was born in a domesticated state and then reverted to life in wild conditions, or it may be an animal that grew up in essentially wild conditions but has developed a comfort level with humans through feeding, receiving medical care, or similar contacts.
The Chincoteague pony, also known as the Assateague horse, is a breed of horse that developed, and now lives, within a semi-feral or feral population on Assateague Island in the US states of Virginia and Maryland. The Chincoteague pony is one of the many breeds of feral horses in the United States. The breed was made famous by the Misty of Chincoteague novels, written by pony book author Marguerite Henry, and first published in 1947, and the pony Misty of Chincoteague.
The Banker horse is a breed of semi-feral or feral horse living on barrier islands in North Carolina's Outer Banks. It is small, hardy, and has a docile temperament, and is genetically related to the Carolina Marsh Tacky of South Carolina and Florida Cracker Horse breeds through their shared Colonial Spanish horse and Iberian horse descent. The current population of wild Banker horses is estimated to be about 400.
Kleppe v. New Mexico, 426 U.S. 529 (1976), was a United States Supreme Court decision that unanimously held the Wild and Free-Roaming Horses and Burros Act of 1971, passed in 1971 by the United States Congress to protect these animals from "capture, branding, harassment, or death", to be a constitutional exercise of congressional power. In February 1974, the New Mexico Livestock Board rounded up and sold 19 unbranded burros from Bureau of Land Management (BLM) land. When the BLM demanded the animals' return, the state filed suit claiming that the Wild Free-Roaming Horses and Burros Act was unconstitutional, claiming the federal government did not have the power to control animals in federal lands unless they were items in interstate commerce or causing damage to the public lands.
The Coffin Bay Pony is a semi-feral horse that developed in Australia. These ponies evolved from foundation bloodstock of 60 Timor Ponies that were imported by English settlers from Indonesia to Coffin Bay, on the southern tip of the Eyre Peninsula at Coffin Bay, South Australia. Coffin Bay Ponies are often confused with Australia's most noted feral horses, the Brumby, which lives in wild mobs all over Australia. However, Coffin Bay ponies live in a fenced protected area.
The Pryor Mountains Wild Horse Range is a refuge for a historically significant herd of free-roaming mustangs, the Pryor Mountain mustang, feral horses colloquially called "wild horses", located in the Pryor Mountains of Montana and Wyoming in the United States. The range has an area of 39,650 acres (160.5 km2) and was established in 1968 along the Montana–Wyoming border as the first protected refuge dedicated exclusively for mustangs. It was the second feral horse refuge in the United States. About a quarter of the refuge lies within the Bighorn Canyon National Recreation Area. A group of federal agencies, led by the Bureau of Land Management, administers the range.
The Wild and Free-Roaming Horses and Burros Act of 1971 (WFRHBA), is an Act of Congress, signed into law by President Richard M. Nixon on December 18, 1971. The act covered the management, protection and study of "unbranded and unclaimed horses and burros on public lands in the United States."
The Pryor Mountain mustang is a substrain of mustang considered to be genetically unique and one of the few strains of horses verified by DNA analysis to be descended from the original Colonial Spanish horses brought to the Americas by the Spanish. They live on the Pryor Mountains Wild Horse Range located in the Pryor Mountains of Montana and Wyoming in the United States, and are the only mustang herd remaining in Montana, and one of sixteen in Wyoming. They are protected by the Wild and Free-Roaming Horses and Burros Act of 1971 (WFRHBA) and managed by the Bureau of Land Management (BLM), who has set the optimum herd number at 120 animals. Genetic studies have revealed that the herd exhibits a high degree of genetic diversity and a low degree of inbreeding, and BLM has acknowledged the genetic uniqueness of the herd. Pryor Mountain Mustangs are relatively small horses, exhibit a natural ambling gait, and domesticated Pryor Mountain mustangs are known for their strength, sure-footedness and stamina. The Pryor Mountains Wild Horse Range is one of the most accessible areas to view feral horse herds in the United States and tourism to the area has increased in recent years.
The Cumberland Island horses are a band of feral horses living on Cumberland Island in the state of Georgia. Popular myth holds that horses arrived on the island sometime in the 16th century with the arrival of the Spanish conquistadors. However, it is unlikely that any horses left by the Spanish survived, and more likely the current population descends from horses brought to the island in the 18th century by the English. Cumberland Island became part of the Cumberland Island National Seashore in 1972 when the National Park Service (NPS) took over its management. These horses are similar to the bands of horses living on the islands of Chincoteague and Assateague. There is estimated to be a population of between 150 and 200 horses on the island. Horses on Cumberland Island have a relatively short life expectancy, due to pest infestations, disease and their rugged environment. In 2000 a behavioral study found that instability marks the bands, with large numbers of co-dominant stallions, early dispersal of juveniles, and frequent band-changing among mares.
Management of free-roaming feral and semi-feral horses, on various public or tribal lands in North America is accomplished under the authority of law, either by the government of jurisdiction or efforts of private groups. In western Canada, management is a provincial matter, with several associations and societies helping to manage wild horses in British Columbia and Alberta. In Nova Scotia, and various locations in the United States, management is under the jurisdiction of various federal agencies. The largest population of free-roaming horses is found in the Western United States. Here, most of them are protected under the Wild and Free-Roaming Horses and Burros Act of 1971 (WFRH&BA), and their management is primarily undertaken by the Bureau of Land Management (BLM), but also by the U. S. Forest Service (USFS)