For the most amazing scholarly blogposts about images of the rhinoceros, see this series from one of my favorite blogs - Poemas del rio Wang:"Previously rhinos were either transported by lorry over very difficult tracks, or airlifted in a net. This new procedure is gentler on the darted rhino because it shortens the time it has to be kept asleep with drugs, the respiration is not as compromised as it can be in a net and it avoids the need for travel in a crate over terrible tracks," explains Dr Flamand. "Another advantage is that rhinos can be more easily removed from dangerous situations, for example if they have fallen asleep in a donga or other difficult terrain after being darted. The helicopter translocations usually take less than ten minutes, and the animals suffer no ill effect. All of the veterinarians working on the translocation agreed that this was now the method of choice for the well-being of the animals."