Swans
species:
Whooper Swan
scientific name:
Cygnus cygnus
notes:
Yellow neckband with a black four alpha-numeric code.
note 1 : used codes are 2J00-2J99 and 3J00-3J99.
email sighting submit:
colour-ring type:
Neckband.
colour-ring colour (of the c-ring):
Yellow [Y]
colour-ring code (of the c-ring):
Four alpha-numeric code (4 letters/numbers).
countries where ringed:
Denmark.
