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Mergellus
genus of Anatidae within Anseriformes

trivial name name latin name specimens
Smew
Mergellus albellus 		Mergellus albellus 2 2

species comparison1)

Genus Mergellus: maximal number primaries: 10, maximal number secondaries: 17, maximal number retrices: 16
1) According to Hartmann (2000a, 2000b and 2016)

Random specimens

Smew
Mergellus albellus
Smew
Mergellus albellus