Illustrated Encyclopedia of Birds - Singh, Balwant Sharma, Sunil; Mital, Govind; Talwar, Saloni Ingty, Alicia Ray, Aditi Ankush, Saikia Sinha, Rohan Sinha, Pankhoori; Dhawan, Mini Chakroborty, Romi Chakroborty, Tannishtha; Singh, Dipali Fernandes, Glenda; Upadhyay, Shefali; Sharma, Aparna (Dorling kindersley Delhi, 2011)