Anser (bird)

Anser; Temporal range: Miocene-Holocene
	Pair of greylag geese, Anser anser
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Anseriformes
Family:	Anatidae
Tribe:	Anserini; Vigors 1825
Genus:	Anser; Brisson, 1760
Type species
	Anas anser; Linnaeus, 1758
Species
	Anser albifrons; Anser anser A. a. anser A. a. rubrirostris A. a. domesticus; Anser brachyrhynchus; Anser caerulescens; Anser canagicus; Anser cygnoides A. c. cygnoides A. c. domesticus; Anser fabalis; Anser erythropus; Anser indicus; Anser rossii; Anser serrirostris; and see text
Synonyms
	Chen Boie, 1822 (but see text); Cygnopsis Brandt, 1836; Cycnopsis Agassiz, 1846 (emendation); Eulabeia Reichenbach, 1852; Philacte Bannister, 1870; Heterochen Short, 1970 (but see text)

Anser is a waterfowl genus that includes the grey geese and the white geese. It belongs to the true goose and swan subfamily of Anserinae under the family of Anatidae.^[2] The genus has a Holarctic distribution, with at least one species breeding in any open, wet habitats in the subarctic and cool temperate regions of the Northern Hemisphere in summer. Some also breed farther south, reaching into warm temperate regions. They mostly migrate south in winter, typically to regions in the temperate zone between the January 0 °C (32 °F) and 5 °C (41 °F) isotherms.

The genus contains 11 living species.^[2]

^ "Anatidae". aviansystematics.org. The Trust for Avian Systematics. Retrieved 2023-08-05.
^ ^a ^b Cite error: The named reference IOU was invoked but never defined (see the help page).

[HM4-1] "Anatidae". aviansystematics.org. The Trust for Avian Systematics. Retrieved 2023-08-05.

[IOU-2] Cite error: The named reference IOU was invoked but never defined (see the help page).

[1]

[2]

Anser Temporal range: Miocene-Holocene

Pair of greylag geese, Anser anser
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Anseriformes
Family:	Anatidae
Tribe:	Anserini Vigors 1825
Genus:	Anser Brisson, 1760
Type species
Anas anser^[1] Linnaeus, 1758
Species
Anser albifrons Anser anser A. a. anser A. a. rubrirostris A. a. domesticus Anser brachyrhynchus Anser caerulescens Anser canagicus Anser cygnoides A. c. cygnoides A. c. domesticus Anser fabalis Anser erythropus Anser indicus Anser rossii Anser serrirostris and see text
Synonyms
Chen Boie, 1822 (but see text) Cygnopsis Brandt, 1836 Cycnopsis Agassiz, 1846 (emendation) Eulabeia Reichenbach, 1852 Philacte Bannister, 1870 Heterochen Short, 1970 (but see text)