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Cepphus
genus of Alcidae within Charadriiformes

trivial name latin name name specimens
Black guillemot
Cepphus grylle 		Cepphus grylle 002 002
Spectacled Guillemot
Cepphus carbo 		Cepphus carbo 001 001

Species comparison1)

Genus Cepphus: maximal number primaries: 11, maximal number secondaries: 19, maximal number retrices: 12
1) According to Hartmann (2000a, 2000b and 2016)

Random specimens

Black guillemot
Cepphus grylle
Black guillemot
Cepphus grylle
Spectacled Guillemot
Cepphus carbo