Gulls

species: 
Glaucous Gull
scientific name: 
Larus hyperboreus
notes: 

Black ring with a white four alpha code, starting letter "G", followed by a colon “:”

note 1 :

email sighting submit: 
email sighting submit (2): 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Black (Niger) [N]
colour-ring code (of the c-ring): 
Four alpha code (4 letters).
countries where ringed: 
Spain.
First letter/number (of the c-ring): 
G.