Heligoland is Germany's only island in the open sea and the country's sole breeding place of ocean-going birds. The diversity of species is legendary. The Birds of the Island of Heligoland is a carefully researched book on the birdlife on Heligoland. It is the result of a systematic observation and investigation since the 1840s. Fully illustrated with 615 photographs, which is at least one picture for almost every species, this title is a feast for the eye even for birdlovers who have no opportunity to travel to Heligoland. The occurence of all 426 species recorded on the island is reviewed on up to four pages per species. 505 figures and 157 maps provide further information. The results from Heligoland are discussed in a broader and often international context for common species as well as for rarities. The text is in German, but every chapter and all species accounts are supplemented by an extensive English summary. The Methods Chapter is completely bilingual to facilitate the use of the book by English speaking readers. All bird names are in German, English and Latin.