1) Bird family 2) Bird subfamily 3) Subfamily anserinae 
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 the ducks, while the Cygninae contain the swans. ==Systematics== Swans - tribe Cygnini True Geese - tri...
(from the article `anseriform`) ...plumage with a conspicuous nuptial one; downy young strongly patterned. Female `inciting` display present. One recently extinct species.Subfamily ...
[n] - used in some classifications for the swans
Anserinae Used in some classifications for the swans.
subfamily Anserinae noun used in some classifications for the swans