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Cygnus falconeri is an Extinction species of very large swan known from Middle Pleistocene-aged deposits from Malta and Sicily. Its dimensions are described as exceeding those of the living mute swan by one-third, which would give a bill-to-tail length of about (based on 145–160 cm for Mute swan (1998). 019854099X, OUP. 019854099X.). By comparison to the bones of living swans, it can be estimated that it weighed around and had a wingspan of about . Due to its size, it may have been Flightless bird.
Its remains on Malta are associated with Dwarf elephant (the smaller Palaeoloxodon falconeri and the larger Palaeoloxodon mnaidriensis), giant dormice ( Leithia, including the largest dormouse ever, the rabbit-sized L. melitensis and the smaller L. cartei and Maltamys gollcheri), the giant tortoise Solitudo and other birds, including raptors and members of the crane genus Grus.C. Savona-Ventura, A. Mifsud " A review of the Pleistocene deposits in the southwestern coast of Malta" Xjenza, 4 (2) (1999), pp. 10-17 On Sicily, its remains are associated with the " Elephas mnaidriensis" faunal complex, including carnivores like Cave hyena, Panthera spelaea, grey wolves and Brown bear, and herbivores like the large dwarf elephant Palaeoloxodon cf. mnaidriensis , wild boar, red deer, fallow deer, aurochs, steppe bison and the hippo Hippopotamus pentlandi,Bonfiglio, L., Marra, A. C., Masini, F., Pavia, M., & Petruso, D. (2002). Pleistocene faunas of Sicily: a review. In W. H. Waldren, & J. A. Ensenyat (Eds.), World islands in prehistory: international insular investigations . British Archaeological Reports, International Series, 1095, 428–436. alongside numerous other bird species, most of which are still living.Pavia, M. The Middle Pleistocene Fossil Avifauna from the “ Elephas mnaidriensis Faunal Complex” of Sicily (Italy). Preliminary Results. In The World of Elephants—International Congress, Proceedings of the First International Congress, Rome, Italy, 16–20 October 2001; pp. 497–501.
Some remains of the species are displayed Għar Dalam museum in Birżebbuġa, Malta.
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