One of the most beautiful antelopes in East Africa, the gerenuk (Litocranius walleri), aka Waller’s gazelle, is incredibly shy. Its name derives from the Somali word for ‘long-necked’.
This male was in the Buffalo Springs Game Reserve in Samburu, Kenya and is probably more used to humans than many. He certainly remained inquisitive while keeping a cautious distance, before suddenly turning tail and heading into the bush – the moment captured here.

Canon 1DMkII with a Canon 300mm f2.8L IS lens & Canon 1.4 extender.
ISO 200 420mm f9 at 1/800