Gulls

species: 
Black-headed Gull
scientific name: 
Chroicocephalus ridibundus
EURING code: 
05820
notes: 

Dark-green ring with a white four alpha-numeric code (starting number "2).

note 1 : several ringers participated on the project : for details and direct contact with the ringer, see attachement below.​

colour-ring type: 
Legring : one, coded.
colour-ring colour: 
Dark Green [G]
colour-ring code: 
Four alpha-numeric code (4 letters/numbers).
First letter: 
2