Superb folio from an early German edition of Conrad Gesner's Vogelbuch Zurich: Christopher Froschauer, 1557 (this state ca 1582). Reference: Nissen 350. Conrad Gessner was a Renaissance polymath, a physician, philosopher, encyclopaedist, bibliographer, philologist, natural historian and illustrator. The woodcuts for the work were undertaken by Hans Asper, Johann Thomas, and Lukas Schrön. Fine 16th century folio. Later hand colour. Minor marginal staining. Conrad Gessner (26 March 1516 – 13 December 1565) was a Swiss physician, naturalist, bibliographer, and philologist. Born into a poor family in Zürich, Switzerland, his father and teachers quickly realised his talents and supported him through university, where he studied classical languages, theology and medicine. He became Zürich's city physician, but was able to spend much of his time on collecting, research and writing. Gessner compiled monumental works on bibliography (Bibliotheca universalis 1545–1549) and zoology (Historia animalium 1551–1558) and was working on a major botanical text at the time of his death from plague at the age of 49. He is regarded as the father of modern scientific bibliography, zoology and botany. He was frequently the first to describe species of plants or animals in Europe, such as the tulip in 1559. A number of plants and animals have been named after him.