Gulls

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

Dark-blue wingtag with white 2 alpha-numeric code (2 numbers, 2 letters or 1 number and 1 letter).

note 1 : (none starting with letter 'A').

email sighting submit: 
colour-ring type: 
Wingtag : coded.
colour-ring colour: 
Blue (Dark) [B]
colour-ring code: 
Two alpha-numeric code (2 letters/numbers).
countries where ringed: 
The Netherlands.