Wednesday, May 2, 2012

>>>Subfamily Anserinae

Anserinae


Anserinae
Domestic Geese
Scientific classification
Kingdom:Animalia
Phylum:Chordata
Class:Aves
Order:Anseriformes
Family:Anatidae
Subfamily:Anserinae
Vigors, 1825
Genera
see text
Synonyms
Cygninae
The Anserinae is a subfamily in the waterfowl family Anatidae. It includes the swans and true geese. Under alternative systematical concepts (see e.g., Terres & NAS, 1991), it is split into two subfamilies, the Anserinae containing the geese (and also the whistling-ducks), while the Cygninaecontain the swans.
A number of other waterbirds, mainly related to the shelducks, have "goose" as part of their name; see the family page at Anatidae and the goose page for these.

Systematics

Swans - tribe Cygnini
  • Genus Cygnus - true swans
The black-and-yellow-billed swans are sometimes separated in the genus Olor.
True Geese - tribe Anserini
  • Genus Anser - grey geese
  • Genus Chen - white geese (sometimes included in Anser)
  • Genus Branta - black geese
Unresolved
  • Genus Coscoroba - Coscoroba Swan
The following two genera are distinct from other geese and often elevated to a subfamily of their own (Cereopsinae), or alternatively into the shelduck subfamily Tadorninae:
Tribe Cereopsini
  • Genus Cereopsis - Cape Barren Goose
  • Genus Cnemiornis - New Zealand geese (prehistoric)
There are some enigmatic subfossils of very large goose-like birds from the Hawaiian Islands which do not appear to be moa-nalos (goose-sized dabbling ducks). They cannot be assigned to any genus living today, though most if not all may be fairly close to Branta:
  • Geochen rhuax - initially allied with Cereopsis, but this seems hardly correct for reasons of biogeography.
  • Giant Hawaiʻi Goose, ?Branta sp.
  • Giant Oʻahu Goose, Anatidae sp. et gen. indet.

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