Crows

species: 
Common Raven
scientific name: 
Corvus corax
notes: 

White ring with a black four alpha-numeric code, starting letter "R".

note 1 :

email sighting submit: 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
White [W]
colour-ring code (of the c-ring): 
Four alpha-numeric code (4 letters/numbers).
countries where ringed: 
Norway.
First letter/number (of the c-ring): 
R