Critically endangered rhinoceroses are on the rise again, from their count of 2,500 in 1990 to present day their population is around 6,500. In the early days of the conservation the rhinos were drugged then put into crates to be relocated by truck and many were injured in the process. Then it was decided to incorporate the old Vietnam helicopters into the rescue effort and after a few tweaks they have it down to a science. In the early days they were transporting them in nets below the helicopters but there were several problems with that method so they started flying them upside down which has allowed about 270 successful airlifts and works well with the rhinos body structure allowing them to breath easier. In case anyone's wondering the reason they have to be relocated is mainly to prevent inbreeding though there is the need to not over graze areas too, plus they repopulate more quickly when their numbers are smaller.
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