Common name: Black Swan. Scientific name: Cygnus atratus. Distinctive characters: Size 130 Cm. - weigh up to 9 Kg (20 lbs). Black Plumage with a Red bill. Both sexes similar but female slightly smaller & lighter than male. Distribution: breeds in south-east & south-west Australia, east coast of Australia & Tasmania. Habit: large non-migratory water bird. Habitat: wetlands of southern Australia. Food: water plants. Breeding: some sex couples make up 20% of all Black Swan pairings each year Monogamous, pairing for life. Nests on large mounds build in the middle of a shallow lake. Both parents share the care of the nest.