Gulls

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

Black ring with a white four alpha code, starting letter 'A'.

note 1 :  

Images: 
email sighting submit: 
snailmail sighting submit: 
Alfons Pennekamp,
colour-ring type: 
Legring : one, coded.
colour-ring colour: 
Black (Niger) [N]
colour-ring code: 
Four alpha code (4 letters).
countries where ringed: 
Germany.
First letter: 
A