The biologist Jörg Hemmer presents a comprehensive portrait of the Red-throated Diver, also known as Red-throated Loon (Gavia stellata), with sections on evolution, habitats, reproduction, diet, migration, population numbers, and conservation. Captivating photographs document the family life and the spectacular territorial behaviour of this charismatic traveller between fresh and saltwater.

Der Biologe Professor Dr. Jörg Hemmer lehrte und forschte bis zum Eintritt in den Ruhestand an der Universität Ulm. Seine Leidenschaft gehört der Naturfotografie.