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in 1905. He received a
Petsche-Labarre Prize in 1905 for work on bird migration. On 5 October 1907 he married Elsa Zwerusmann (born 4 June 1884) in Dessau. He joined Bremen Realgymnasium as a teacher of natural sciences and mathematics in 1909. In 1912 he became a member of the German Ornithological
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songs. Reich claimed a
Lamarckian view that he had somehow got the song into the genes of the canaries but Duncker interpreted this differently. Duncker suggested that Reich had selected for better learning in the canaries which were exposed to nightingale songs either from nightingales, their
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from 1933 and became a member of the NSDAP only on
January 1, 1941 (number 8,346,434). After the Allied occupation, he was interviewed and was classified as a "follower" (Mitlaeufer) on April 7, 1948. Although he had supported sterilization of the mentally retarded, he had never personally
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In the early 1920s, he began conducting several breeding experiments on birds to study the heritability of plumage colors and structures, such as the hood. He studied the genetics of canaries and attempted to produce a red canary through hybridization with the red siskin. From 1925 Duncker
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Under the Weimar
Republic, Duncker headed a local Bremen group of the German society for Racial Hygiene. He organized lectures on Nazi racial policy. He himself was a eugenicist who recommended forced sterilization of the disabled. In 1934, he published a book
255:"Der Ausfall des Fettfarbstoffes in den epidermoidalen Gebilden: auf Grund erblicher Veranlagung (Alipochromismus) bei Kanarienvögeln, Kanarienbastarden und Wellensittichen"
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Duncker was born in
Ballenstedt to businessman and judge Ernst Eduard Heinrich (born 1848) and Marigrita (Marie Elisabeth) Uhde (born 1847 in
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Birkhead, Tim R.; Schulze-Hagen, Karl; Palfner, Götz (30 June 2003). "The colour of birds: Hans
Duncker, pioneer bird geneticist".
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discriminated against the Jews. He retired as a teacher and worked on the bird collection of the Bremen
Overseas Museum.
77:). He grew up in Dessau where he went to the Herzogliches Friedrichs-Gymnasium. He completed a PhD in zoology from the
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302:"Die Reich'sche Gesangeskreuzung (Nachtigall/Kanarienvogel) eine "erworbene" Eigenschaft: Vorläufige Mitteilung"
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Die 'Erbpolizei' im
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recordings, or from other canaries that had learned the nightingale songs.
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on teaching biology along with
Friedrich Lange. He was a member of the
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and other ornithological journals. In 1927 he established a journal
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collaborated with the wealthy businessman and aviculturist
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German ornithologist, geneticist and eugenicist (1881–1961)
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Zeitschrift fĂĽr
Induktive Abstammungs- und Vererbungslehre
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Society. In 1921, he began to work with canary breeder
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128:Neue Ziele und Wege des Biologieunterrichts
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208:"Genetik der Kanarienvögel"
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120:Genetik der Kanarienvögel
347:Nitschke, Asmus (2013).
306:Journal fĂĽr Ornithologie
389:People from Ballenstedt
79:University of Göttingen
253:Duncker, Hans (1927).
206:Duncker, Hans (1929).
165:Journal of Ornithology
108:Journal of Ornithology
45:– 22 December 1961 in
379:German ornithologists
89:Luscinia megarhynchos
69:Early life and career
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114:(which later became
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112:Vogel ferner Länder
31:Hans Julius Duncker
394:German eugenicists
318:10.1007/BF02538207
271:10.1007/BF01847021
224:10.1007/BF01811930
185:10.1007/BF02465626
100:Carl Hubert Cremer
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18:Hans Duncker
374:1961 deaths
369:1881 births
212:Der ZĂĽchter
104:budgerigars
47:SaarbrĂĽcken
35:Ballenstedt
363:Categories
143:References
84:Karl Reich
75:Valparaiso
63:red siskin
59:eugenicist
55:geneticist
326:0021-8375
279:1617-4615
232:0514-0641
136:Stahlhelm
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