[6] Rathika received her first camera from her uncle, an amateur photographer himself, and began shooting pictures of trees and flowers.
[6] In 2003 she visited the Keoladeo National Park in Bharatpur and took pictures of birds.
Thereafter, she took to wildlife photography as her professional interest and visited many national parks in India, Kenya, and Tanzania.
[7] Her wildlife photography was featured at the "Clean Ganga Campaign" held in September 2005 at the India International Centre, New Delhi.
[8] In 2007, the Jawaharlal Nehru University's annual calendar featured her bird photographs.