Gulls

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

White ring with a black four alpha-numeric code, starting letter 'M' followed by three numbers.

note 1 :

website sighting submit: 
Ringmärkningscentralen
email sighting submit: 
website information: 
Riksmuseum Stockholm
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: 
Sweden.
First letter/number (of the c-ring): 
M