Redhead (bird) "Nassarius acutus", "Nassarius vibex", "Natica" sp., "Neritina virginea", "Odostomia trifida", "Olivella minuta", "Olivella watermani", "Polinices" sp., Pyramidellidae, "Pyrgocythara plicosa", "Rissoina catesbyana", "Sayella livida", "Turbonilla" sp., "Turbonilla interrupta" and "Vitrinella" sp. Redhead (bird) The redhead ("Aythya americana") is a medium-sized diving duck. The scientific name is derived from Greek "aithuia" an unidentified seabird mentioned by authors including Hesychius and Aristotle, and Latin "americana", of America. The redhead is long with an wingspan. It belongs to the genus Aythya, together with 11 other described species. The redhead and the common pochard form a sister group which together is sister to the canvasback.
What is a Masterpiece? What is a Masterpiece? What is a Masterpiece? is a 1979 non-fiction book by British historian Kenneth Clark. It is a transcribed version of the Walter Neurath memorial lectures given by Clark. The work, initially released on 1 January 1979, received a Thames & Hudson republication on 1 May 1992. Kenneth Clark had already achieved fame with a series of popular books while also serving as, from 1969 on, the writer, producer and presenter of the BBC programme, "Civilisation", a pioneering television documentary series. The prestigious series earned a Peabody Award as well as general commercial success. In the work,