Hans Julius Duncker

Hans Julius Duncker ( born May 26, 1881 in Ballenstedt, Anhalt, today Saxony -Anhalt, † December 22 1961 in Saarbrücken ) was a German ornithologist, geneticist and eugenicist.

Studies, family, career and Avian Research

In 1905 he received the Petsche - Labarre - price for the work over the Wanderzug of birds. He studied zoology, he finished 1905 in Göttingen with a dissertation "On the homology of Cirrus and Elytron at the Aphroditiden / A contribution to the morphology of the Aphroditiden " at Ernst Ehlers. Military service and various schools follow. On October 5, 1907, he married Elsa Zwerusmann in Dessau ( born June 4, 1884); 1908, the first child was born. From 1909 he worked as a teacher of science and mathematics at the Bremer Secondary School. In 1912 he became a member of the German Ornithological Society. On April 24, 1913 his son was born, who died on January 27, 1914. His second daughter was born on 28 August 1915. In 1921 he started in collaboration with the Kanarienzüchter Karl Reich ( 1885-1970 ) experiments on a Kanarienstamm who should sing like nightingales, but found that only enhanced the learning behavior at his birds had ( Duncker 1922). In the early 1920s he began and poor in individuals with busy intersection tests, the heritability of plumage colors and structures, such as, for example, to explore the hood education. From 1925 collaborated with Carl Duncker Hubert Cremer and extended his experiments among other budgies from.

"With its large-scale crossing experiments Duncker has the practice of aviculture and the theoretical natural science successfully linked. He had realized that bird owners and scientists alike can benefit from each other. " ( Birkhead, Schulze -Hagen, Palfner 2003, p 254)

1927-1933 he gave the magazine he founded, birds of distant lands and wrote numerous articles for the Feathered World, the Journal of Ornithology and other ornithological journals.

Eugenics to 1945

Duncker was in the Weimar Republic, Chairman of the Bremen branch of the German Society for Racial Hygiene. In 1930 he was chairman of the Racial Hygiene Society Bremen. From 1931 he was one of the driving forces behind the " Racial Hygiene professional society in the Natural Sciences Club to Bremen ," the lectures with exponents of Nazi racial policy, such as Robert Ritter organized in collaboration with the health department. As a committed eugenicist Duncker advocated the forced sterilization of people with disabilities ( Meyer & Duncker, 1933). 1934 published a list issued by him and Friedrich Lange book that the "New (s) goals and ways of biology teaching " described in National Socialism (this book was set after the war in the Soviet zone of occupation on the list of proscribed literature). He worked on the genealogy age gender, about the Uhden.

Duncker had the front-line soldiers held memberships in NSLB ( November 1933 ), the Stahlhelm, Bund ( before 1933 ), in the Nazi Party (from 1941 ) and functions as a speaker of the upper structure school of BDM and the speaker bar of the Race Policy Office of the NSDAP.

After the end of the Nazi era

Hans Duncker was classified as a "fellow traveler " on 7 April 1948. After the end of Nazism, he dedicated himself retired to the rebuilding of the bird collection of the Bremen Overseas Museum.

Quotes

"We want to thank our guide Adolf Hitler ... that the genetically healthy reproductive happy family of the middle class should be treated with care especially in the new state. "