In 1954 Talbot was appointed Staff Ecologist of the Survival Service Commission of the IUCN, a post he held to 1956. There was a particular focus on
rangeland management. In his first year, Talbot made a trip stretching from Africa and Indonesia, researching animals such as the
Arabian oryx,
Indian rhinoceros and
Asiatic lion; he visited around 30 countries over the period. A 1960 report by Talbot on the plight of the oryx, for the
Fauna Preservation Society, led to action on 1963 by the Society to preserve the species in captivity. In 1955
Hal Coolidge of the IUPN asked Talbot to visit colonial
Tanganyika, to investigate whether the
Ngorongoro Highlands were to be excluded from the
Serengeti National Park. This turning out to be the case, Talbot wrote a paper for the British
Colonial Secretary,
Anthony Greenwood. An ecological study was arranged, backed by the
Fauna Preservation Society, and carried out by
William Pearsall. Talbot met with
Paul Brooks of
Houghton Mifflin in the fall of 1955. At the meeting Brooks, having been prompted by a book proposal from
Rachel Carson raised the issue of the
environmental impact of pesticides; and Talbot gave him some history of the concerns of the IUPN (as the IUCN then was) about it going back to their 1949 meeting at
Lake Success. Carson's celebrated book,
Silent Spring, appeared in 1962. From 1959 when he married, to 1963, with breaks, Talbot was running an ecological project in
East Africa, with his wife Marty. While there Talbot was involved via
Nick Arundel in discussions that led to the
African Wildlife Foundation. He also helped convene the 1961 Arusha Conference at which game wardens discussed
anti-poaching. They indicated the
wildlife trade as a driver, and Talbot took that conclusion forward to the IUCM. In 1965
Sidney Dillon Ripley hired Talbot to work for the
Smithsonian Institution on its activities in international conservation, Marty Talbot also getting a research post. The Talbots worked in 1967 with the filmmaker
Des Bartlett. From 1968 Talbot worked under
Helmut Karl Buechner at the Smithsonian's Office of Ecology. In 1970, with
David Challinor and
Francis Raymond Fosberg, Talbot was involved in research on the
Mekong Delta and the ecological impact of dams and irrigation. ==Government scientist==