William Fortescue

Camera: Nikon D810

Lens: Nikon 200-400mm

Aperture: f/4

Shutter speed: 1/2000

ISO: 320

Description: Kisaru and her three cubs chase a young Thompsons gazelle

Story from behind the lens: Kisaru had bought down the young gazelle, but rather than killing it kept releasing it so that as it ran away her three subs could practice chasing, tripping and pinning down the young Tommy. A harsh but necessary lesson