Karl Russ

Karl Friedrich Otto Ruß (January 14, 1833, Baldenburg – September 29, 1899, Berlin) was a Prussian pharmacist, aviculturist, author of bird-keeping books, and the founding editor of the world's first bird-fancier magazine ''Die Gefiederte Welt''. Along with Bruno Dürigen, he also founded the magazine ''Isis'' in 1876. He sometimes wrote under the pseudonym "Berthold Schwarz". He was among the few who managed to breed the now extinct Carolina parakeets in captivity. Provided by Wikipedia