Gulls

species: 
Herring Gull
scientific name: 
Larus argentatus
notes: 

Orange ring with a black four alpha-numeric code :
*starting cipher '2' -separated by a colon ':' and followed by three letters (on right leg)
*metal ring (on left leg).

note 1 : used letters are : A, B, C, D ,E, G, H, J, K, L, N, P, R, S, T, U, V, W, X, Y, Z.

note 2 : to be read from top till bottom.

note 3 : ex. : 2:AAA ... 2:ZZZ

note 4 :

email sighting submit: 
email sighting submit (2): 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Orange [O]
colour-ring code (of the c-ring): 
Four alpha-numeric code (4 letters/numbers).
countries where ringed: 
France.
Images: 
First letter/number (of the c-ring): 
2