actively participated in the work of the biology club of All-Russian Society for the Protection of Nature (VOOP) under the leadership of P. P. Smolin. Together with Boris Vilenkin, Pyotr Vtorov, Yuri Puzachenko, Olga Shokhina, Mikhail Chernyakhovsky, Leonid Lisovenko and Roman Zlotin, they became prominent representatives of the second generation of VOOP. In 1956-1957, he studied at the Faculty of Science of the Moscow City Pedagogical Institute of V.P. Potemkin. After the second year, he moved to the MSU Faculty of Geography. In 1963, he graduated from the Department of Biogeography of the Faculty of Geography of Moscow State University, and by 1966 pursued his prost-graduation education. Scientific and social work In 1968, he defended his postgraduation education thesis on the topic "Cultural landscapes of the arid regions of the USSR and their avifauna". Since then, he is working at the Department of Biogeography of the MSU Faculty of Geography - first junior, then senior research associate, since 1979 - associate professor, and since 2017 as professor. He has read courses in ecology, ornithology, nature conservation, world biogeography; he constantly gives lectures. In 1968, for the first time he appeared in the popular television show "In the world of animals", A. G. Bannikov introduced him to the show host, A. M. Zguridi. Later he was a scientific consultant of the movies about animals “Black Mountain”, “Riki-Tiki-Tavi”, etc. Since 1977, he became the host of this program. In 1971-1972, he passed a 10-month scientific internship at the Faculty of Zoology of the Australian National University (Canberra, Australia). Traveled to many areas of Australia and described this journey in the book "Flight of the boomerang." In 1975, he worked as part of the Soviet delegation at the XII General Assembly of the International Union for Conservation of Nature in the city of Kinshasa (Zaire). Elected member of the IUCN National park Commission. Visited the eastern part of Zaire and the national parks of Virunga and Kahuzi-Biega. For the first time, a group of USSR zoologists saw mountain or Eastern gorilla in the natural environment. The photos and trip report were published in the Природа Nature magazine. In the same 1975, after visiting India, Drozdov became a vegetarian. He participated in numerous scientific expeditions on the territory of the USSR (to Kamchatka Peninsula, the Far East, the Kuril Islands, the Pamir Mountains, the Tian Shan, the Karakum Desert). In 1979, he climbed to