Feral horse
Encyclopedia
A feral horse is a free-roaming horse
Horse
The horse is one of two extant subspecies of Equus ferus, or the wild horse. It is a single-hooved mammal belonging to the taxonomic family Equidae. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature into the large, single-toed animal of today...

 of domesticated
Domestication
Domestication or taming is the process whereby a population of animals or plants, through a process of selection, becomes accustomed to human provision and control. In the Convention on Biological Diversity a domesticated species is defined as a 'species in which the evolutionary process has been...

 ancestry. As such, a feral
Feral
A feral organism is one that has changed from being domesticated to being wild or untamed. In the case of plants it is a movement from cultivated to uncultivated or controlled to volunteer. The introduction of feral animals or plants to their non-native regions, like any introduced species, may...

 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
Wildlife
Wildlife includes all non-domesticated plants, animals and other organisms. Domesticating wild plant and animal species for human benefit has occurred many times all over the planet, and has a major impact on the environment, both positive and negative....

, 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 condition but may be occasionally handled or managed by humans, particularly if privately owned, are referred to as "semi-feral
Semi-feral
A semi-feral animal is an animal that lives predominantly in a feral state, but has some contact and experience with humans. This may be due to having been born into a domesticated state and then reverting to life in wild conditions, or it may be an animal that grows up in essentially wild...

."

Feral horses live in groups called a band, herd, harem, or mob. Feral horse herds, like those of wild horse
Wild Horse
The wild horse is a species of the genus Equus, which includes as subspecies the domesticated horse as well as the undomesticated Tarpan and Przewalski's Horse. The Tarpan became extinct in the 19th century, and Przewalski's Horse was saved from the brink of extinction and reintroduced...

s, are usually made up of small bands led by a dominant mare
Mare (horse)
A mare is an adult female horse or other equine.In most cases, a mare is a female horse over the age of three, and a filly is a female horse age three and younger. However, in Thoroughbred horse racing, a mare is defined as a female horse more than four years old; in harness racing a mare is a...

, containing additional mares, their foal
Foal
A foal is an equine, particularly a horse, that is one year old or younger. More specific terms are colt for a male foal and filly for a female foal, but these terms are used until the horse is age three or four. When the foal is nursing from its dam , it may also be called a suckling...

s, and immature horses of both sexes. There is usually one herd stallion
Stallion (horse)
A stallion is a male horse that has not been gelded .Stallions will follow the conformation and phenotype of their breed, but within that standard, the presence of hormones such as testosterone may give stallions a thicker, "cresty" neck, as well as a somewhat more muscular physique as compared to...

, 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 a common territory. Bands are usually on the small side, as few as three to five animals, but sometimes over a dozen. The makeup of bands shifts 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 given closed ecosystem
Ecosystem
An ecosystem is a biological environment consisting of all the organisms living in a particular area, as well as all the nonliving , physical components of the environment with which the organisms interact, such as air, soil, water and sunlight....

 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.

Feral horse populations

Horses which live in an untamed state but have ancestors who have been domesticated
Domestication of the horse
There are a number of hypotheses on many of the key issues regarding the domestication of the horse. Although horses appeared in Paleolithic cave art as early as 30,000 BCE, these were truly wild horses and were probably hunted for meat. How and when horses became domesticated is disputed...

 are not true "wild" horses; they are feral horses. The best known examples of feral horses are the "wild" horses of the American west. When Europeans reintroduced the horse
Horse
The horse is one of two extant subspecies of Equus ferus, or the wild horse. It is a single-hooved mammal belonging to the taxonomic family Equidae. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature into the large, single-toed animal of today...

 to the Americas, beginning with the arrival of the Conquistadors in the 15th century, some horses escaped and formed feral
Feral
A feral organism is one that has changed from being domesticated to being wild or untamed. In the case of plants it is a movement from cultivated to uncultivated or controlled to volunteer. The introduction of feral animals or plants to their non-native regions, like any introduced species, may...

 herds known today as Mustangs
Mustang (horse)
A Mustang is a free-roaming horse of the North American west that first descended from horses brought to the Americas by the Spanish. Mustangs are often referred to as wild horses, but there is intense debate over terminology...

.

Australia has the largest population of feral horses in the world, with an excess of 400,000 feral horses. The Australian name equivalent to the 'Mustang' is the Brumby
Brumby
A Brumby is a free-roaming feral horse in Australia. Although found in many areas around the country, the best-known brumbies are found in the Australian Alps region in south-eastern Australia. Today, most of them are found in the Northern Territory, with the second largest population in Queensland...

, feral descendants of horses brought to Australia by English settlers.

In Portugal
Portugal
Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

, the free-ranging feral horse is known as Sorraia
Sorraia
The Sorraia is a rare breed of horse indigenous to the portion of the Iberian peninsula known today as Portugal. The Sorraia is known for its primitive features, including a convex profile and dun coloring with primitive markings...

. There are also isolated populations of feral horses in a number of other places, including Sable Island
Sable Island
Sable Island is a small Canadian island situated 300 km southeast of mainland Nova Scotia in the Atlantic Ocean. The island is a year-round home to approximately five people...

 off the coast of Nova Scotia
Nova Scotia
Nova Scotia is one of Canada's three Maritime provinces and is the most populous province in Atlantic Canada. The name of the province is Latin for "New Scotland," but "Nova Scotia" is the recognized, English-language name of the province. The provincial capital is Halifax. Nova Scotia is the...

, Assateague Island
Assateague Island
Assateague Island is a long barrier island located off the eastern coast of Maryland and Virginia. It is best known for its herds of feral horses, pristine beaches, and the Assateague Lighthouse. The island also contains numerous marshes, bays and coves, including Toms Cove...

 off the coast of Virginia
Virginia
The Commonwealth of Virginia , is a U.S. state on the Atlantic Coast of the Southern United States. Virginia is nicknamed the "Old Dominion" and sometimes the "Mother of Presidents" after the eight U.S. presidents born there...

 and Maryland
Maryland
Maryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...

, and Vieques island off the coast of Puerto Rico
Puerto Rico
Puerto Rico , officially the Commonwealth of Puerto Rico , is an unincorporated territory of the United States, located in the northeastern Caribbean, east of the Dominican Republic and west of both the United States Virgin Islands and the British Virgin Islands.Puerto Rico comprises an...

. Some of these horses are said to be the descendants of horses who 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.

A modern feral horse population (Janghali ghura) is found in the Dibru-Saikhowa National Park and Biosphere reserve of Assam
Assam
Assam , also, rarely, Assam Valley and formerly the Assam Province , is a northeastern state of India and is one of the most culturally and geographically distinct regions of the country...

, in northern India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...

, a herd of approximately 79 Feral horses descended from animals that escaped army camps during World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

.

Modern feral horses

Modern types of feral horses that have a significant percentage of their number living in a feral state, even though there may be some domesticated representatives, include the following types, landrace
Landrace
A landrace is a local variety of a domesticated animal or plant species which has developed largely by natural processes, by adaptation to the natural and cultural environment in which it lives. It differs from a formal breed which has been bred deliberately to conform to a particular standard...

s, and breeds:
  • Banker horse
    Banker Horse
    The Banker horse is a breed of feral horse living on the islands of North Carolina's Outer Banks. It is small, hardy, and has a docile temperament...

    , on the Outer Banks
    Outer Banks
    The Outer Banks is a 200-mile long string of narrow barrier islands off the coast of North Carolina, beginning in the southeastern corner of Virginia Beach on the east coast of the United States....

     of North Carolina
    North Carolina
    North Carolina is a state located in the southeastern United States. The state borders South Carolina and Georgia to the south, Tennessee to the west and Virginia to the north. North Carolina contains 100 counties. Its capital is Raleigh, and its largest city is Charlotte...

  • Brumby
    Brumby
    A Brumby is a free-roaming feral horse in Australia. Although found in many areas around the country, the best-known brumbies are found in the Australian Alps region in south-eastern Australia. Today, most of them are found in the Northern Territory, with the second largest population in Queensland...

    , the feral horse of Australia
    Australia
    Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

  • Chincoteague Pony
    Chincoteague Pony
    The Chincoteague Pony, also known as the Assateague horse, is a breed of pony that developed and lives in a feral condition on Assateague Island in the United States states of Virginia and Maryland. The breed was made famous by the Misty of Chincoteague series written by Marguerite Henry starting...

    , on Assateague Island
    Assateague Island
    Assateague Island is a long barrier island located off the eastern coast of Maryland and Virginia. It is best known for its herds of feral horses, pristine beaches, and the Assateague Lighthouse. The island also contains numerous marshes, bays and coves, including Toms Cove...

     off the coasts of Virginia
    Virginia
    The Commonwealth of Virginia , is a U.S. state on the Atlantic Coast of the Southern United States. Virginia is nicknamed the "Old Dominion" and sometimes the "Mother of Presidents" after the eight U.S. presidents born there...

     and Maryland
    Maryland
    Maryland is a U.S. state located in the Mid Atlantic region of the United States, bordering Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware to its east...

  • Cumberland Island Horse, on Cumberland Island
    Cumberland Island
    Cumberland Island is one of the Sea Islands. Cumberland is the largest in terms of continuously exposed land area of Georgia's barrier islands. It is located on the Atlantic Ocean off the coast of the U.S. state of Georgia and is part of Camden County...

     off the coast of southern Georgia
    Georgia (U.S. state)
    Georgia is a state located in the southeastern United States. It was established in 1732, the last of the original Thirteen Colonies. The state is named after King George II of Great Britain. Georgia was the fourth state to ratify the United States Constitution, on January 2, 1788...

  • Danube Delta horse
    Danube Delta horse
    Danube Delta horse refers to a population of feral horse found in and around Letea Forest, located in the Danube Delta, between the Sulina and Chilia branches of Danube...

    , in and around Letea Forest, between the Sulina and Chilia branches of Danube
    Danube
    The Danube is a river in the Central Europe and the Europe's second longest river after the Volga. It is classified as an international waterway....

  • ?Elegesi Qiyus Wild Horse (Cayuse), Canada; lives in the Nemaiah Valley, British Columbia
    Nemaiah Valley, British Columbia
    Nemaiah Valley, also spelled Nemiah Valley and Nemaia Valley, is an unincorporated locality and First Nations reserve and ranching community between Chilko Lake and the Taseko Lakes in the Chilcotin District of the Central Interior of British Columbia.It is the home of the Xeni Gwet'in band of the...

  • Kaimanawa horse
    Kaimanawa horse
    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...

    , New Zealand
    New Zealand
    New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...

  • Kondudo horse, in the Kondudo region, Ethiopia; threatened with extinction
  • Misaki Pony
    Misaki
    The is a breed of pony that is native to Japan. Like other native horses of Japan, it is believed to have developed from horses brought to Japan from China, with the earliest imports dating back at least 2,000 years....

    , Japan
    Japan
    Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

  • Mustang
    Mustang (horse)
    A Mustang is a free-roaming horse of the North American west that first descended from horses brought to the Americas by the Spanish. Mustangs are often referred to as wild horses, but there is intense debate over terminology...

    , legally protected by the Wild and Free-Roaming Horses and Burros Act of 1971
    Wild and Free-Roaming Horses and Burros Act of 1971
    The Wild and Free-Roaming Horses and Burros Act of 1971 , is an Act of Congress , signed into law President Richard M. Nixon on December 18, 1971...

     in the western United States
    United States
    The United States of America is a federal constitutional republic comprising fifty states and a federal district...

  • Namib desert horse
    Namib Desert Horse
    The Namib Desert Horse is a rare horse found in the Namib Desert, of Namibia, Africa. It is most likely the only feral herd of horses residing in Africa. Today, approximately 150 horses now live in 350 square kilometres of the Namib desert. The origin of these animals is unclear, though several...

    , Namibia
    Namibia
    Namibia, officially the Republic of Namibia , is a country in southern Africa whose western border is the Atlantic Ocean. It shares land borders with Angola and Zambia to the north, Botswana to the east and South Africa to the south and east. It gained independence from South Africa on 21 March...

  • Nokota horse
    Nokota horse
    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 local Indian horses mixed with Spanish horses,...

  • Sorraia
    Sorraia
    The Sorraia is a rare breed of horse indigenous to the portion of the Iberian peninsula known today as Portugal. The Sorraia is known for its primitive features, including a convex profile and dun coloring with primitive markings...

    , a feral horse native to Portugal
    Portugal
    Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

     and Spain
    Spain
    Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

  • Sable Island Pony
    Sable Island Pony
    The Sable Island Pony, also known as the Sable Island Horse, is a type of feral horse found on Sable Island, an island off the coast of Nova Scotia, Canada. The first horses were brought to the island for pasture in the late eighteenth century, and additional horses were later transported to...

     found in Nova Scotia
    Nova Scotia
    Nova Scotia is one of Canada's three Maritime provinces and is the most populous province in Atlantic Canada. The name of the province is Latin for "New Scotland," but "Nova Scotia" is the recognized, English-language name of the province. The provincial capital is Halifax. Nova Scotia is the...

  • Welsh Pony
    Welsh Pony
    The Welsh Pony and Cob are closely related horse breeds including both pony and cob types, which originated in Wales in the United Kingdom...

    , mostly domesticated, but a feral population of about 180 animals roams the Carneddau
    Carneddau
    The Carneddau , are a group of mountains in Snowdonia, Wales. It includes the largest contiguous areas of high ground in Wales and England, as well as six or seven of the highest peaks in the country—the Fourteen Peaks...

     hills of North Wales
    Wales
    Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

    . Other populations roam the eastern parts of the Brecon Beacons National Park.

Semi-feral horses

In the United Kingdom, herds of free-roaming ponies live in apparently wild conditions in various areas, notably Dartmoor, Exmoor, 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 (for example 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.
  • Camargue horse
    Camargue (horse)
    The Camargue horse is an ancient breed of horse indigenous to the Camargue area in southern France. For centuries, possibly thousands of years, these small horses have lived wild in the harsh environment of the Camargue marshes and wetlands of the Rhone delta. There they developed the stamina,...

    , in marshes of the Rhone delta, southern France
  • Dartmoor pony
    Dartmoor pony
    -External links:*...

    , England; predominantly domesticated, also lives in semi-feral herds
  • Exmoor pony
    Exmoor pony
    The Exmoor pony is a horse breed native to the British Isles, where some still roam as semi-feral livestock on Exmoor, a large area of moorland in Devon and Somerset in southwest England. The Exmoor is one of the British Isles mountain and moorland pony breeds, having conformation similar to that...

    , England; predominantly domesticated, also lives in semi-feral herds
  • New Forest pony
    New Forest pony
    The New Forest Pony or New Forester is one of the recognised Mountain and moorland or Native pony breeds of the British Isles. The breed is valued for its hardiness, strength and sureness of foot...

    , predominantly domesticated, also lives in semi-feral herds in the area of Hampshire
    Hampshire
    Hampshire is a county on the southern coast of England in the United Kingdom. The county town of Hampshire is Winchester, a historic cathedral city that was once the capital of England. Hampshire is notable for housing the original birthplaces of the Royal Navy, British Army, and Royal Air Force...

    , England
    England
    England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

  • Konik
    Konik
    The Konik or Polish primitive horse is a small horse, a kind of semi-feral horse, originating in Poland. The Polish word konik is the diminutive of koń, the Polish word for "horse" . However, the name "konik" or "Polish konik" is used to refer to certain specific breeds...

    , semi-feral horse of eastern Europe.
  • Delft pony, feral herds first introduced by the Portuguese during colonial times to Delft island north of Sri Lanka

Population impacts

Feral populations are usually controversial, with livestock
Livestock
Livestock refers to one or more domesticated animals raised in an agricultural setting to produce commodities such as food, fiber and labor. The term "livestock" as used in this article does not include poultry or farmed fish; however the inclusion of these, especially poultry, within the meaning...

 producers often at odds with horse aficionados and other animal welfare
Animal welfare
Animal welfare is the physical and psychological well-being of animals.The term animal welfare can also mean human concern for animal welfare or a position in a debate on animal ethics and animal rights...

 advocates. Different habitat
Habitat
* Habitat , a place where a species lives and grows*Human habitat, a place where humans live, work or play** Space habitat, a space station intended as a permanent settlement...

s 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
Introduced species
An introduced species — or neozoon, alien, exotic, non-indigenous, or non-native species, or simply an introduction, is a species living outside its indigenous or native distributional range, and has arrived in an ecosystem or plant community by human activity, either deliberate or accidental...

, such as Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

, or if population is allowed to exceed available range, there can be significant impacts on soil, vegetation and animals that are native species. If a feral population lives close to civilization, their behavior can lead them to damage human-built livestock fencing and related structures. 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
Western United States
.The Western United States, commonly referred to as the American West or simply "the West," traditionally refers to the region comprising the westernmost states of the United States. Because the U.S. expanded westward after its founding, the meaning of the West has evolved over time...

, there is considerable controversy over which species is responsible for degradation of rangeland
Rangeland
Rangelands are vast natural landscapes in the form of grasslands, shrublands, woodlands, wetlands, and deserts. Types of rangelands include tallgrass and shortgrass prairies, desert grasslands and shrublands, woodlands, savannas, chaparrals, steppes, and tundras...

, with commercial interests often advocating for the removal of feral horse population to allow more grazing for cattle
Cattle
Cattle are the most common type of large domesticated ungulates. They are a prominent modern member of the subfamily Bovinae, are the most widespread species of the genus Bos, and are most commonly classified collectively as Bos primigenius...

 or sheep, and advocates for feral horses recommending reduction in the numbers of domestic livestock allowed to graze on public lands.

There are certain populations that have considerable historic or sentimental value, such as the Chincoteague pony
Chincoteague Pony
The Chincoteague Pony, also known as the Assateague horse, is a breed of pony that developed and lives in a feral condition on Assateague Island in the United States states of Virginia and Maryland. The breed was made famous by the Misty of Chincoteague series written by Marguerite Henry starting...

 that lives on Assateague Island
Assateague Island
Assateague Island is a long barrier island located off the eastern coast of Maryland and Virginia. It is best known for its herds of feral horses, pristine beaches, and the Assateague Lighthouse. The island also contains numerous marshes, bays and coves, including Toms Cove...

, a national seashore with a delicate coastal ecosystem, or the Misaki
Misaki
The is a breed of pony that is native to Japan. Like other native horses of Japan, it is believed to have developed from horses brought to Japan from China, with the earliest imports dating back at least 2,000 years....

 pony of Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

 that lives on a small refuge within the municipal boundaries Kushima
Kushima, Miyazaki
is a city located in Miyazaki Prefecture, Japan.As of 2003, the city has an estimated population of 22,727 and the density of 77.06 persons per km²...

. These populations manage to thrive with careful management that includes using the animals to promote tourism
Tourism
Tourism is travel for recreational, leisure or business purposes. The World Tourism Organization defines tourists as people "traveling to and staying in places outside their usual environment for not more than one consecutive year for leisure, business and other purposes".Tourism has become a...

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, or the often-controversial practice of simply shooting them. Fertility control is also sometimes used, though it is expensive and has to be repeated on a regular basis.
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