Gulls

species: 
Caspian Gull
scientific name: 
Larus cachinnans
notes: 

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

note 1 : one bird ringed on 31.12.2020 and used code G.BBP.

note 2 :

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.