Loic Poidevin / Nilgai (Boselaphus tragocamelus) male camouflaged behind grass, Bandhavgarh National ParK, Madhya Pradesh, India

Bernard Castelein / Nilgai (Boselaphus tragocamelus) male portrait, Keoladeo Ghana NP, Bharatpur, Rajasthan, India

Nick Garbutt / Nilgai {Boselaphus tragocamelus} females sparring, Keoladeo Ghana NP, Rajasthan, India

TJ Rich / Nilgai {Boselaphus tragocamelus} male, Ranthambhore NP, Rajasthan, India

TJ Rich / Nilgai {Boselaphus tragocamelus} male, Ranthambhore NP, Rajasthan, India

Theo Allofs / Nilgai (Boselaphus tragocamelus) group of females during the dry season, India

Thomas Marent / Nilgai (Boselaphus tragocamelus) male, Ranthambore National Park, India

Pete Oxford / Nilgai / Blue Bull (Boselaphus tragocamelus) young male, Bharatpur National Park / Keoladeo Ghana Sanctuary. Rajasthan, India

Pete Oxford / Nilgai (Boselaphus tragocamelus) male, Velavadar National Park, Gujarat, India

Pete Oxford / Nilgai (Boselaphus tragocamelus) male, Velavadar National Park, Gujarat, India

Pete Oxford / Nilgai (Boselaphus tragocamelus) male, Velavadar National Park, Gujarat, India

Bernard Castelein / Nilgai (Boselaphus tragocamelus) female with young, Keoladeo Ghana NP, Bharatpur, Rajasthan, India

Bernard Castelein / Nilgai (Boselaphus tragocamelus) male portrait, Keoladeo Ghana NP, Bharatpur, Rajasthan, India

Bernard Castelein / Nilgai (Boselaphus tragocamelus) male portrait, Keoladeo Ghana NP, Bharatpur, Rajasthan, India

Pete Oxford / Nilgai / Blue bull {Boselaphus tragocamelus} wading through lake, Keoladeo Ghana NP, Bharatpur, Rajasthan, india

Hermann Brehm / Nilgai in water crossing wetlands {Boselaphus tragocamelus} India

Anup Shah / Male Nilgai running {Boselaphus tragocamelus} Rann of Kutch, Gujarat, India

Anup Shah / Nilgai {Boselaphus tragocamelus} and Egret, Gir NP, Gujarat, India

ASHISH & SHANTHI CHANDOLA / Nilgai (Boselaphus tragocamelus) bull, Blackbuck National Park, Velavadar, Gujarat, India, January

Ashok Jain / Nilgai (Boselaphus tragocamelus) pair in courtship behaviour, Sariska NP, India

Pete Oxford / Axis Deer (Cervus axis), Nilgai (Boselaphus tragocamelus) and Rhesus Macaque (Macaca mulatta) on dirt road in Gir Forest National Park, Gujarat, India

Bernard Castelein / Nilgai {Boselaphus tragocamelus} male resting, Keoladeo Ghana NP, Bharatpur, Rajasthan, India

Nick Garbutt / Nilgai with calf {Boselaphus tragocamelus} Keoladeo Ghana NP India Rajasthan