Born in Koshi Tappu, Rajkumar Singh is one of the senior most nature guides of the Reserve. Rajkumar believes deeply in the potential of Koshi Tappu to become one of the preeminent bird reserves in the world and has advocated for its funding for over 18 years. As the chairperson of Kushaha-Lauki Citizen's Committee, he is responsible for ensuring the balance between people and nature across the 173 km2 buffer zone, which has a population of 80,000 people, many of whom live below the poverty line. Rajkumar Singh has participated in species population surveys for the Wild Water Buffalo, Swamp Francolin, Bengal Florican, and Water Birds. He is actively engaged in landscape restoration projects and youth awareness campaigns in the schools of Paschim Kushaha. During his tenure at KTK-BELT, he has played a critical role in the acquisition of a 40-acre property, organized high-level meetings at Koshi Tappu with state and local governing bodies, and led all aspects of a major Bengal Florican Survey in Koshi Tappu.