What Is a Species?
Guest Post Karl Schulze-Hagen, Mönchengladbach, Germany The very first paper published in the Journal für Ornithologie, in 1853, was written by the Dresden zoologist Ludwig Reichenbach (1793-1879). That paper {On the concept of species in ornithology} [see footnote 1] is a bit long-winded and difficult to comprehend by today’s standards, but it is historically important …