J. Edgar Bauer has written about Ferdinand Karsch-Haack .
It was Ferdinand Karsch-Haack (1853-1936) who proved that bisexual behaviour is normal among animals and humans.
(In 1999, biologist Bruce Bagemihl's "Biological Exuberance: Animal Homosexuality and Natural Diversity" added to our knowledge.)
Ferdinand Karsch-Haack was Curator at the Zoological Museum of the Friedrich-Wilhelm University in Berlin.
Karsch-Haack became famous for his studies of gay behaviour and gay people in European history.
Karsch-Haack wrote: "Is same-sex love based on sociability? A grounded Rejection" (1905) and "The German Movement for the Abrogation of Paragraph 175 and for the Assessment of the Ban on Same-Sex Conduct" (1906).
In 1933, the year Hitler seized power, Karsch-Haack published "The love affairs of Prince Heinrich, Brother of Frederick the Great,"
Karsch-Haack showed that gay behaviour is frequently seen in animals. He wrote "Pederasty and Tribady among Animals based on Literature", published in 1900.
In 1901, Karsch-Haack published "Uranism, or Pederasty and Tribady among Primitive Peoples".
In 1923, Karsch-Haack published "The Role of Homoeroticism in the Arabic World."
Karsch-Haack believed that homophobia was not natural and inborn but was the result of conditioning by people like Christian fundamentalists.
Bisexual animals? Bisexual Moslems? Sex with boys?...
Nona: Nabokov and Pale Fire and deception