Gulls

species: 
Black-headed Gull
scientific name: 
Chroicocephalus ridibundus
notes: 

Dark-blue ring with a white four alpha-numeric code (starting letter "N" followed by one letter and two numbers).

note 1: code used is NA01-NA00 ; NC01-NC00 ; NE01-NE00 ; NH01-NH00 ; NJ01-NJ00 ; NK01-NK00 ; NL01-NL00 ; NM01-NM00 ; NN01-NN00 ; NP01-NP00 ; NR01-NR00 ; NS01-NS00 ; NT01-NT00 ; NU01-NU00 ; NV01-NV00 ; NX01-NX00 ; NY01-NY00.

note 2 : starting letters NH, NP used in Barcelona.

note 3 :

email sighting submit: 
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.
Images: 
First letter/number (of the c-ring): 
N