Swans

species: 
Whooper Swan
scientific name: 
Cygnus cygnus
EURING code: 
01540
notes: 

Black ring with a white three alpha-numeric code.

note 1 :

email sighting submit: 
colour-ring type: 
Legring : one, coded.
colour-ring colour: 
Black (Niger) [N]
colour-ring code: 
Three alpha-numeric code (3 letters/numbers).
countries where ringed: 
Norway.