This guide is based on wikipedia's list of birds of Germany with accidentals removed to keep the guide under 500 entries.
The Eurasian Wren (Troglodytes troglodytes), is a very small bird, and the only member of the wren family Troglodytidae found in Eurasia. In Anglophone Europe, it is commonly known simply as the Wren. It was once lumped with Troglodytes hiemalis of eastern North America and Troglodytes pacificus of western North America as the Winter Wren.