Sergei Buturlin
Sergei Aleksandrovich Buturlin (); 22 September 1872 in Montreux – 22 January 1938 in Moscow was a Russian ornithologist. A scion of one of the oldest families of Russian nobility, Buturlin spent most his life in Russia. His father A.S Buturlin (1845-1916) was physician, writer and Marxist friend of Leo Tolstoy. He went to school in Simbirsk (modern Ulyanovsk) and studied jurisprudence in St. Petersburg around 1894–95. He then worked in the legal service but his interest in zoology was so strong that he spent most of his career collecting specimens across Russia and Siberia and describing the results  of his observations. Until 1892 he collected in the Volga region, then in the Baltic region; from 1900 to 1902 on the islands of Kolguyev and Novaya Zemlya. Between 1904 and 1906 he took part in an expedition to the Kolyma River in Siberia, and in 1909 he visited the Altay Mountains, and he made his final expedition in 1925 on the Chukchi Peninsula. He published many important work on the taxonomy and distribution of the palaearctic birds, including: In 1906 Buturlin became a foreign member of the British Ornithologists' Union; in 1907 he became a corresponding member of the  American Ornithologists' Union. In 1918 he joined the zoological museum of the University of Moscow, and in 1924 he donated his collection of palaearctic birds. He was a pioneer in Russia of the study of the diversity of species and described more than 200 new species of bird.