EditorialHoly Roman Emperor Emperor Charles the Bald, Carolus Calvus 823-877. King of West Frankia, King of Italy. Copperplate engraving from Abraham Bogaerts De Roomsche Monarchy, The Roman Monarchy, Francois Salma, Utrecht, 1697.
EditorialGymnocephalus calvus, Print, Gymnocephalus is a genus of perches native to Western Eurasia. They are collectively called ruffes and resemble the common perches (Perca), but are usually smaller and have a different pattern., 1700-1880.
EditorialGymnocephalus calvus, Print, Gymnocephalus is a genus of perches native to Western Eurasia. They are collectively called ruffes and resemble the common perches (Perca), but are usually smaller and have a different pattern., 1700-1880.
EditorialTreron calva, Print, The African green pigeon (Treron calvus) is a species of bird in the family Columbidae, and one of 5 green pigeon species in the Afrotropics. The species has a wide range in Sub-Saharan Africa with around 17 accepted races., 1820-1860.
EditorialGymnocephalus calvus, Print, Gymnocephalus is a genus of perches native to Western Eurasia. They are collectively called ruffes and resemble the common perches (Perca), but are usually smaller and have a different pattern., 1801.
EditorialGeronticus calvus, Print, The southern bald ibis (Geronticus calvus) is a large bird found in open grassland or semi-desert in the mountains of southern Africa. Taxonomically, it is most closely related to its counterpart in the northern regions of Afr...
EditorialGeronticus calvus (Southern bald ibis). Draughtsman: Robert Jacob Gordon. Dating: c. 8-Nov-1778. Measurements: h 660 mm ? w 480 mm; h 242 mm ? w 391 mm; h 213 mm ? w 381 mm.
EditorialRed-headed vulture, Sarcogyps calvus. Critically endangered. (Pondicherry vulture, Vultur ponticerianus). Illustration drawn and engraved by Richard Polydore Nodder. Handcoloured copperplate engraving from George Shaw and Frederick Nodder's "The Natura...
EditorialColeto, Sarcops calvus, starling species native to the Philippines. Illustration drawn and engraved by Richard Polydore Nodder. Handcoloured copperplate engraving from George Shaw and Frederick Nodder's "The Naturalist's Miscellany," London, 1801.
EditorialAfrican green pigeon, Treron calvus, and western or blue crowned pigeon, Goura cristata (vulnerable). Handcoloured copperplate stipple engraving from Dumont de Sainte-Croix's "Dictionary of Natural Science: Ornithology," Paris, France, 1816-1830. Illus...