The grey junglefowl (Gallus sonneratii), also known as Sonnerat’s junglefowl, is one of the wild ancestors of domestic fowl together with the red junglefowl and other junglefowls. The grey junglefowl is responsible for the yellow pigment in the legs and different body parts of all the domesticated chicken.
This species is endemic to India, and even today it is found mainly in peninsular India and towards the northern boundary. It will sometimes hybridize in the wild with the red junglefowl. It also hybridizes readily in captivity and sometimes with free-range domestic fowl kept in habitations close to forests.
The species epithet commemorates the French explorer Pierre Sonnerat. Local names include Komri in Rajasthan, Geera kur or Parda komri in Gondi, Jangli Murghi in Hindi, Raan kombdi in Marathi, Kattu Kozhi in Tamil and Malayalam, Kaadu koli in Kannada and Tella adavi kodi in Telugu. source