One group darts rhinos and injects the horn with a dye, rendering the horn worthless for poaching. The U.S. TV series "Gorongosa Park: a Rebirth"[0] shows park

One group darts rhinos and injects the horn with a dye, rendering the horn worthless for poaching. The U.S. TV series "Gorongosa Park: a Rebirth"[0] shows park stewards trying to rebuild tourism, with one goal being better employment options (as guides, rangers, etc.) than poaching. Some of their elephants don't develop tusks at all, an apparent mutation that increases survival odds. [0] http://www.pbs.org/gorongosa/home/ http://www.pbs.org/gorongosa/home/