Gulls

species: 
Herring Gull
scientific name: 
Larus argentatus
notes: 

Dark blue ring with a white four alpha-numeric code, starting letter 'W' followed by a colon ':' and three numbers or two numbers and a letter.

note 1 : used codes are W:001, W:002, ... W:999.

note 2 : birds have been ringed since 2013 in Falmouth, Cornwall, as part of a study of behaviour and movements of urban gulls.

note 3 : c-ring position can be either leg.

note 4 : 

email sighting submit: 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Dark Blue [B]
colour-ring code (of the c-ring): 
Four alpha-numeric code (4 letters/numbers).
countries where ringed: 
United Kingdom.
Images: 
First letter/number (of the c-ring): 
W