Birds found in towns, parks, and around buildings.
The book's defining feature is its organization by rather than strictly by taxonomic order. This approach makes it a precursor to modern "where to watch" and habitat-based identification guides. The contents are divided into sections such as: Exkursionsbuch zum Bestimmen der Vögel in freie...
Species inhabiting dry meadows, fields, and agricultural areas. Wetlands: Birds of moors, swamps, and inland damp meadows. Birds found in towns, parks, and around buildings
Those interested in the development of birdwatching in the early 20th century. Birds found in towns