Gulls

species: 
Eurasian Mew Gull
scientific name: 
Larus canus
notes: 

Dark-blue ring with a white four alpha-numeric code: starting with the country-code "5", followed by 2 numbers and one letter (E, H or J).

note 1 :

email sighting submit: 
email sighting submit (2): 
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: 
Spain.
First letter/number (of the c-ring): 
5