Swans

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

Red ring with a white three alpha-numeric code, starting letter 'B' followed by two numbers. 

note 1 :

email sighting submit: 
snailmail sighting submit: 
Bulgarian Ornithological Centre,
colour-ring type: 
Legring : one, coded.
colour-ring colour: 
Red [R]
colour-ring code: 
Three alpha-numeric code (3 letters/numbers).
countries where ringed: 
Bulgaria.
First letter: 
B