( CNN ) -- Indonesia celebrated a unique birth this weekend in the form of a baby Sumatran rhino -- only the fifth known to have been born in captivity ever . The rare arrival took place at the Sumatran Rhino Sanctuary in the Way Kambas National Park in Sumatra province , making Indonesia the third country to have successfully bred the species in captivity . There are less than 200 Sumatran rhinos remaining in the world , according to the International Rhino Foundation ( IRF ) , making it the most endangered of all rhino species . Aside from a dozen or so in Malaysia 's Sabah province , the Sumatran rhinos reside in three national parks in Indonesia . The critical endangered species is most threatened by poaching for its horns and destruction of its natural habitat . These factors have contributed to an estimated reduction in its numbers of more than 50 % over the last two decades , the IRF said . The father of Indonesia 's newborn calf is actually one of three Sumatran Rhinos bred in captivity at the Cincinnati Zoo in the United States . Andalus was born in 2001 , some 112 years after the first known captive birth at Calcutta Zoo in India in 1889 . Saturday 's birth was welcomed by rhino conservationists , following two miscarriages by Andalas ' partner , Ratu , since their pairing in 2009 . `` It 's really a big present for the Sumatran rhino breeding efforts as we know that this is a very rare species which have some difficulties in their reproduction , '' Masyhud , a forestry ministry spokesman , told reporters , in quotes carried by Agence France Presse .
Masyhud born in Sumatran , the fifth known to have been born in captivity ever . Indonesia is now the fifth country to have successfully bred the species in captivity . a dozen Sumatran rhinos remain in the world , making it the most endangered of all rhino species .