Shelduck

The Shelducks, genus Tadorna, are a group of large birds in the Tadorninae subfamily of the Anatidae, the biological family that includes the ducks and most duck-like waterfowl such as the (geese and swans).

The shelducks are a group of larger, often semi-terrestrial waterfowl which can be seen as intermediate between geese (Anserinae) and ducks.

There are seven species, related to other groups as shown:

Tadorninae

• Cyanochen, Blue-winged Goose[?]
• Chloephaga, sheldgeese[?]
• Neochen, Orinoco Goose[?]
• Alopochen, Egyptian Goose
• Tadorna: shelducks
  • Ruddy Shelduck[?] Tadorna ferruginea
  • Cape Shelduck[?] Tadorna cana
  • Australian Shelduck Tadorna tadornoides
  • Paradise Shelduck[?] Tadorna variegata
  • Crested Shelduck[?] Tadorna cristata
  • Common Shelduck Tadorna tadorna
  • Radjah Shelduck[?] Tadorna radjah
• Lophonetta, Crested Duck[?]
• Tachyeres steamer ducks[?]