The mute swan (Cygnus olor) is a species of swan and a member of the waterfowl family Anatidae. It is native to much of Eurasia, and (as a rare winter...

west-central U.S.) †Dwarf swan (Cygnus equitum) Bate 1916 sensu Livezey 1997 [Anser equitum (Bate 1916) Brodkorb 1964; Cygnus (Olor) equitum Bate 1916 sensu...

mass, the heaviest flying bird in the world. Alongside the mute swan (Cygnus olor), Dalmatian pelican (Pelecanus crispus), kori bustard (Ardeotis kori)...

that Cygnus olor is "not mute but lacks bugling call, merely honking, grunting, and hissing on occasion." However, the whooper swan (Cygnus cygnus), a...

The Royal Swans are a flock of swans of two species—the mute swan (Cygnus olor) and the black swan (C. atratus)—the original six pairs of which were a...

Cygnus falconeri is an extinct, very large swan known from Middle Pleistocene-aged deposits from Malta and Sicily. Its dimensions are described as exceeding...

(Cygnus spp.) and geese during the breeding season, and are frequently driven off by these birds over territorial disputes. Mute swans (Cygnus olor) have...

3 kg (38 lb). The heaviest single waterfowl ever recorded was a cob (Cygnus olor) from Poland which weighed 23 kg (51 lb), and was allegedly too heavy...

Lesser rhea Rhea pennata 19.6 (43) 28.6 (63) 96 (3.2) No 11 Mute swan Cygnus olor 11.87 (26.2) 23 (51) 100-130 (3.3 - 4.3) Yes 12 Great bustard Otis tarda...

birds native to Europe, its closest rival in mass being mute swans (Cygnus olor), which weighs on average around 10.1 kg (22 lb), followed closely by...