In Pictures: Wildlife Photographer of the Year winners

"Memorial to a species" by Brent Stirton, winner of Wildlife Photographer of the Year 2017 and winner of The Wildlife Photojournalist Award: Story category in the competition organised by the Natural History Museum of the UK. A black rhino bull lies dead after its killers entered the Hluhluwe Imfolozi Park, South Africa illegally. It emerged as the winning shot from almost 50,000 competition entries from 92 countries. Photograph: Brent Stirton/Wildlife Photographer of the Year/PA