SwansSwan: Cygnus olor. The Mute Swan is also called mute swan, because unlike the other swans that are reported on the air by emitting strong trumpet, it remains silent. It is the largest and heaviest birds in this habitat swimmers. It is solitary and very aggressive. It is omnivorous, feeding on aquatic plants, mollusks and small fish.SWANS. COMMON SWAN. ( Num ref.: 1884u )SWANS. COMMON SWAN. ( Num ref.: 1886u )SWANS. COMMON SWAN. ( Num ref.: 1882u )SWANS. COMMON SWAN. ( Num ref.: 5974z )SWANS. COMMON SWAN. ( Num ref.: 5978z )SWANS. COMMON SWAN. ( Num ref.: 6645y ) Zoo of Vigo. SpainFacilitiesPlanetarioReptiles and AmphibiansSnakesGreen MambaSavannah monitorLizardsAxolotlTurtlesReptileMammalsEuropean lynxTigersLionsWolfLion CubsBrown bearLemurPrimatesPantera negraOlive Baboon (Papio anubis)Barbary Macaque (Macaca sylvanus)BatsNocturamaZebrasLlama and GuanacoCorsica mouflonWhite fallow deerWild boarCastorPuercoespínPecarís de collarUalabiOther mammalsArachnids and insectsArachnidsInsectsButterfly - birdAves. BirdsEmusGriffon VultureDemoiselle CraneStorksPeacock. Indian PeafowlSwansGeeseSabana africanaAvestrúzAves RapacesRuddy shelduckWaterfowlTerrestrial birds