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Anser
genus of Anatidae within Anseriformes

trivial name latin name name specimens
Greylag Goose
Anser anser 		Anser anser 007 007
Greater white-fronted goose
Anser albifrons 		Anser albifrons 005 005
Ross's Goose
Anser rossii 		Anser rossii 001 001
Swan Goose
Anser cygnoid 		Anser cygnoid 004 004
Bean Goose
Anser fabalis 		Anser fabalis 003 003
Emperor goose
Anser canagicus 		Anser canagicus 003 003
Pink-footed Goose
Anser brachyrhynchus 		Anser brachyrhynchus 003 003
Snow Goose
Anser caerulescens 		Anser caerulescens 001 001
Bar-headed Goose
Anser indicus 		Anser indicus 002 002

Species comparison1)

Genus Anser: maximal number primaries: 10, maximal number secondaries: 21, maximal number retrices: 20
1) According to Hartmann (2000a, 2000b and 2016)

Random specimens

Bar-headed Goose
Anser indicus
Greater white-fronted goose
Anser albifrons
Swan Goose x Greylag Goose
Anser cygnoid x Anser anser
Bean Goose
Anser fabalis
Snow Goose
Anser caerulescens
Greylag Goose x Swan Goose
Anser anser x Anser cygnoid
Greater white-fronted goose
Anser albifrons