Arabian Oryx
Oryx leucoryx
Arabian Oryx (Oryx leucoryx): The White Oryx That Zoos Brought Back
The Arabian Oryx (Oryx leucoryx) is the smallest oryx and the one best suited to true desert. Hunting wiped it out in the wild by 1972, and zoo-bred herds have returned it to the Arabian Peninsula since 1982.
- Habitat
- Gravel plains, hard sand flats, desert steppe
- Size
- About 1 m at shoulder, about 70 kg (up to ~100 kg)
- Horns
- Straight, ringed, 50–75 cm, both sexes
- Diet
- Mainly grasses; also buds, herbs, fruit, tubers, roots
- Range
- Reintroduced: Oman, Saudi Arabia, Israel, UAE, Jordan
- Conservation
- Vulnerable (IUCN, since 2011); ~1,220 wild (2016)
Habitat & range
The Arabian oryx lives on gravel plains, hard sand flats between dunes and desert steppe, and it is the oryx most specialised for true desert. It once ranged across most of the Arabian Peninsula and into neighbouring regions such as Sinai and Mesopotamia. Hunting with rifles and vehicles in the 20th century shrank its range until the last known wild animals were shot in Oman in 1972. Reintroduced herds now live mostly in protected areas in Oman, Saudi Arabia, Israel, the United Arab Emirates and Jordan, and large managed herds are kept in fenced reserves in Qatar and the UAE.
Diet & foraging
It is mainly a grazer of desert grasses but also eats buds, herbs, fruit, tubers and roots. It can go long periods without drinking, getting most of its water from plants and by feeding when vegetation is wet with dew or fog. Because desert rain is patchy, herds roam widely: oryx appear able to detect distant rainfall and move toward new growth, and they can travel up to about 50 km in a night. One reintroduced herd in Oman used a range of about 3,000 square kilometres.
Behavior & adaptations
Adults stand about 1 m at the shoulder and weigh around 70 kg, with some reaching about 100 kg. Both sexes carry long, straight, ringed horns about 50–75 cm long, and females' horns are usually thinner and longer. The near-white coat reflects sunlight, while the legs and undersides are brown and the face has black markings. On cold winter mornings the oryx can raise its hair to trap warmth, and its legs darken in winter. In summer, free-living oryx in Saudi Arabia let their body temperature climb about 4 °C over the day and lose the stored heat at night, which saves water they would otherwise spend on evaporative cooling. They rest through the hottest hours in shade or in shallow scrapes dug under shrubs. Herds are mixed-sex and usually small, and rank is settled mostly by posturing displays rather than fights.
Conservation
In 1962 Operation Oryx, run by the Fauna Preservation Society (now Fauna & Flora), captured three of the last wild oryx. With animals donated from London Zoo, Kuwait and Saudi Arabia, nine founders formed the "World Herd" at Phoenix Zoo by 1964. On 31 January 1982 ten zoo-bred oryx were released in Oman's central desert, and later releases followed in Saudi Arabia, Israel, the UAE and Jordan. Oman's herd grew to about 450 by 1996 but poaching and habitat degradation cut it to about 65 by 2007, and after Oman shrank the reserve by 90% the Arabian Oryx Sanctuary became the first site ever deleted from UNESCO's World Heritage List that year. The IUCN moved the species to Endangered in 1986 and to Vulnerable in 2011, the first species once Extinct in the Wild to improve by three categories. The 2016 assessment estimated about 1,220 wild oryx (around 850 mature) and 6,000–7,000 in captivity. Poaching, illegal live capture, drought and overgrazing remain threats.
Fun facts about Arabian Oryx
- Seen side-on, its two straight horns can line up to look like one, so it is widely thought to be a source of the unicorn legend.
- Its Arabic name is Al Maha.
- Nine of the ten oryx released in Oman on 31 January 1982 had been born and bred in the United States.
- In summer its body temperature can swing about 4 °C in a day, a heat-storage trick that saves water.
- Oman's Arabian Oryx Sanctuary was the first site ever removed from UNESCO's World Heritage List, in 2007.
Arabian Oryx vs Gray Wolf
On defence, an Arabian oryx's long horns can hold off a lone Arabian wolf, though calves stay at risk.
The gray wolf's smallest form, the Arabian wolf (Canis lupus arabs), shares the oryx's deserts, and calves are the vulnerable ones. In 2024 a ranger in Saudi Arabia's Sharaan Nature Reserve filmed an Arabian wolf chasing an oryx calf while the mother turned to defend it. A healthy adult oryx is a hard target. It faces the threat head-on and swings horns up to 75 cm long, so a lone wolf has to dodge the points while looking for an opening at the calf. On defence, the oryx usually has the edge: the wolf can harass and test, but a mother standing her ground with those horns is a risky meal.
Read more about Gray Wolf.
Common questions about Arabian Oryx
Is the Arabian oryx the animal behind the unicorn legend?
Possibly. Seen side-on, its two long, straight horns can line up and look like one, so the Arabian oryx is widely thought to be a source of the unicorn legend (IUCN fact sheet; Fauna & Flora). The IUCN notes the tale is also linked to another antelope, the saola, so no single animal can claim it.
How did zoos save the Arabian oryx from extinction?
In 1962 Operation Oryx caught three of the last wild oryx in what is now Yemen. With animals from London Zoo, Kuwait and Saudi Arabia, nine founders formed the "World Herd" at Phoenix Zoo by 1964 (Phoenix Zoo). The last wild oryx was shot in 1972, and zoo-bred oryx were released in Oman on 31 January 1982, later also in Saudi Arabia, Israel, the UAE and Jordan (IUCN). Like Przewalski's horse, it is a classic zoo comeback.
How many Arabian oryx are left in the wild?
About 1,220 in the wild, including roughly 850 mature adults, plus an estimated 6,000–7,000 in captivity, according to the IUCN's 2016 assessment (IUCN SSC Antelope Specialist Group). It has been rated Vulnerable since 2011, the first species once Extinct in the Wild to improve by three Red List categories (IUCN).
How does the Arabian oryx survive in the desert without drinking?
It gets most of its water from plants, often feeding when they are wet with dew or fog (SDZWA; Qatar e-Nature). In summer it lets its body temperature climb about 4 °C over the day and sheds the heat at night, saving water it would otherwise lose to evaporation (Ostrowski et al. 2003). It rests in shade or shallow scrapes through the hottest hours.
How is an Arabian oryx different from a gemsbok or scimitar-horned oryx?
The Arabian oryx is the smallest oryx, about 1 m tall and 70 kg, with a near-white body, dark legs and straight horns (IUCN SSC ASG). The southern African gemsbok is the largest, grey-tan with bold black bands on its face, neck, flanks and legs (ADW). The North African scimitar-horned oryx is white with a rusty neck and the only oryx whose horns curve backward (ADW).
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