In this new series by Norbert Bahr, all bird species and subspecies on the planet are listed according to the latest classification. In addition to the English and scientific names, the current German species names are given for the first time in a list as comprehensive and with an information content equal to that of Peters's classic 16-volume work Checklist of Birds of the World. The text is bilingual throughout.
The index is organised in the following way: Species and subspecies name; and for all taxa author(s), year and original publication with page reference, the original taxon name, type locality, and German and English species names. The species list is deliberately published in different volumes in order to enable rapid updating in order to ensure that the work reflects the latest state of scientific knowledge.