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RHINOCEROS BREEDING PROJECT

Here at Blinkwater Game Farm, you can come and meet our 5 White Rhinos and baby born on the 24th December 2008.

The White Rhinoceros or Square-lipped rhinoceros (Ceratotherium simum) is one of the five species of rhinoceros that still exist and is one of the few megafauna species left. It has a wide mouth used for grazing and is the most social of all rhino species. The White Rhino is the most common of all rhinos and consists of two subspecies: the Southern White Rhino, with an estimated 17,480 wild-living animals at the end of 2007 (IUCN 2008), and the much rarer Northern White Rhino. The northern subspecies may have as few as 13 remaining world-wide - 9 captive and 4 wild - although the wild population has not been seen since 2006 and may have disappeared entirely.

A popular theory of the origins of the name White Rhinoceros is a mistranslation from Dutch into Afrikaans and English. The Afrikaans word "wit", meaning "white" in English is said to have been derived by mistranslation of the Dutch word "wijde", which means "wide" in English and is spelt "wyd" in Afrikaans. The word "wide" refers to the width of the Rhinoceros mouth. So early European settlers in South Africa misinterpreted the "wyd" for "white" and the rhino with the wide mouth ended up being called the White Rhino and the other one, with the narrow pointed mouth, was called the Black Rhinoceros. A review of Dutch and Afrikaans literature about the rhinoceros, however, has also failed to produce any evidence that the word wyd was ever used to describe the rhino. Other popular theories suggest the name comes from its wide appearance throughout Africa, its colour due to wallowing in calcerous soil or bird droppings or because of the lighter colour of its horn. An alternative common name for the white rhinoceros, more accurate but rarely used, is the square-lipped rhinoceros. The White Rhinoceros' generic name, Ceratotherium, given by the zoologist John Edward Gray in 1868,[5] is derived from the Greek terms keras (κερας) "horn" and therion (θηριον) "beast". Simum, is derived from the Greek term simus (σιμος), meaning "flat nosed".

White Rhinoceros in Lake Nakuru.

There are two subspecies of White Rhinos; the Southern White Rhino (Ceratotherium simum simum) and the Northern White Rhinoceros. As of 31 December 2007, there were an estimated 17,480 Southern White Rhino in the wild (IUCN 2008), making them the most abundant subspecies of rhino in the world. South Africa is the stronghold for this subspecies (93.0%), conserving 16,255 individuals in the wild in 2007 (IUCN 2008). There are smaller reintroduced populations within the historical range of the species in Namibia, Botswana, Zimbabwe and Swaziland, while a small population survives in Mozambique. Populations have also been introduced outside of the former range of the species to Kenya, Uganda and Zambia (Emslie and Brooks 1999; Emslie et al. 2007).

Wild-caught southern whites will readily breed in captivity given appropriate amounts of space and food, as well as the presence of other female rhinos of breeding age. For instance, 91 calves have been born at the San Diego Wild Animal Park since 1972. However, for reasons that are not currently understood, the rate of reproduction is extremely low among captive-born southern white females.

The White Rhinoceros is the world's largest land mammal after the elephants. It has a massive body and large head, a short neck and broad chest. The head and body length is 3.4 to 4.2 m (11 to 13.75 ft), with the tail adding another 50 to 70 cm (20 to 27.5 in). The shoulder height is 150-185 cm (59-73 inches). Weight typically ranges from 1,440 to 3,600 kg (3,168 to 7,920 lbs), with the male being slightly heavier. The record-sized White Rhinoceros was about 4500 kg (10,000 lb). On its snout it has two horns made of keratin, rather than bone as in deer antlers. The front horn is larger that the other horn and averages 89.9 cm (35 inches) in length and can reach 150 cm (59 inches). The White Rhinoceros also has a noticeable hump on the back of its neck which supports its large head. Each of the rhino's four stumpy feet has three toes. The colour of this animal ranges from yellowish brown to slate grey. The only hair on them is on the ear fringes and tail bristles. White Rhinos have the distinctive flat broad mouth which is used for grazing.

White Rhinos have three distinct toes.

Its ears can move independently to pick up more sounds but it depends most of all on smell. The olfactory passages which are responsible for smell are larger than their entire brain.

White Rhinoceros are found in grassland and savannah habitat. Herbivore grazers that eat grass, preferring the shortest grains, the White Rhino is one of the largest pure grazers. Regularly it drinks twice a day if water is available, but if conditions get dry it can live four or five days without water. It spends about half of the day eating, one third resting, and the rest of the day doing various other things. White Rhinos, like all species of rhino, love wallowing in mudholes to cool down.

White rhinos can produce sounds which include a panting contact call, grunts and snorts during courtship, squeals of distress, and deep bellows or growls when threatened. Threat displays (in males mostly) include wiping its horn on the ground and a head-low posture with ears back, combined with snarl threats and shrieking if attacked. The White Rhino is quick and agile and can run 30 mph (50 km/h).

White Rhinos can live in a crash or herd of up to 14 animals (usually mostly female). Sub-adult males will congregate, often in association with an adult female. Most adult bulls are solitary. Dominant bulls mark their territory with excrement and urine. The dung is laid in well defined piles. It may have 20-30 of these piles to alert passing rhinos that it's his territory. Another way of marking their territory is wiping his horns on bushes or the ground and scrapes with its feet before urine spraying. They do this around 10 times an hour while patrolling territory. The same ritual as urine marking except without spraying is also commonly used. The territorial male will scrape-mark every 30 yards or so around its territory boundary. Subordinate males do not mark territory. The most serious fights break out over mating rights over a female. Female territory is overlapped extensively and they do not defend it.



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