Horn removal to reduce the risk to the rhino from poachers. This is white rhino (Ceratotherium simum) nature conservation. The horn grows back (like your fingernails and toenails, which as for rhino horn are made of keratin). However, that means the animal needs to be periodically captured and de-horned which is dangerous for the rhino and the capture team.
This image was published in The Conversation alongside the article Spy-cam Rhinos to Take on Poachers with Devices Hidden in their Horns.
Location: Northern Cape, South Africa
Photographer: Jason Gilchrist