These elegant, wary animals have long, thin, finely ridged horns that curve up over their backs; the name ‘scimitar’ comes from the curved swords used for centuries in Arabic countries.
Scimitar-horned Oryx were once widespread in North Africa but the species is now classed as Extinct in the Wild by the International Union for Conservation of Nature and Natural Resources (on the IUCN ‘red list’).
There has been a long-term decline in numbers because of climate changes (excessive drought), uncontrolled hunting by people, agricultural encroachment on their habitat, and excessive grazing of limited vegetation by domestic livestock.
There have not been any confirmed sightings of Scimitar-horned Oryx in the wild since 1988, although perhaps as many as 9,000 animals survive in zoos, safari parks, ranches and public holdings around the world, along with some small populations reintroduced to Tunisia and Morocco in fenced, protected areas.
Werribee Open Range Zoo is part of an international breeding program to help save this species from extinction.
Scimitar-horned Oryx usually live on arid plains and deserts, but in some areas they also inhabit rocky hillsides and thick brush.
Herds of more than 1,000 used to congregate in areas of fresh pasture, surface water after rainfall or during the wet season migrations. Now, a typical herd has fewer than 20 members and has a tight social structure.
Breeding males will hold a territory and aggressively defend it and their group of females. Solitary males will also sometimes maintain a territory in which they seek to control and mate with the females that are present.
Scimitar-horned Oryx are ruminants with a compartmentalised stomach that allows for more effective digestion of the food they eat. All ruminants re-chew their food, a behaviour known as ‘chewing the cud’.
They feed at night and during the cool of early morning when the dry desert plants, on which they live, have higher water content. Desert plants during the day contain only 1–2% water but absorb moisture during the night to increase their water content up to 40%. Oryx will browse on a wide range of grass species, leafy shrubs and fruits.