Lesser Black-backed Gull

Red ring with a white five alpha-numeric code, starting letter "KJ".

note 1 :

Dark-green ring with a white three alpha-numeric code : starting letter 'C' followed by ':' and two numbers (on right tarsus) and metal ring (on left tarsus).

note 1 : used codes are : C:01 -C:99,

note 2 :   

Brown (umber) ring with a white two alpha code.

note 1 : used codes are with a ":" or a "+" between the two letters.

note 2 :

Violet/mauve ring with a white two alpha code.

note 1 : used codes are with a ":" or a "+" between the two letters.

note 2 :

Dark-green ring with a white two alpha code.

note 1 : used codes are with a ":" or a "+" between the two letters.

note 2 :

White ring with a black four alpha-numeric code : number / number / letter 'Y' / number (on left leg) and metal ring (on right leg).

note 1 : used codes 00Y0 - 99Y9.

note 2 :

Yellow ring with a black three alpha-numeric code :
number / number / ":" (colon) / letter "W"
OR
letter / number / ":" colon / letter "W"

note 1 : letter "W" is the scheme marker.

note 2 : used codes are : 1A:W, 1B:W ... 0Y:W, 0Z:W ... A1:W, A2:W ... Z9:W, Z0:W.

note 3 : c-ring on left tarsus and metal ring on right tarsus.

note 4 : also Herring Gull and Great Black-backed gull is is ringed. 

note 5 : birds ringed in Walney Island, Cumbria (93 LBbG and 65 HG), Copeland, Ireland (1 LBbG and 15 HG), Bowland, Lancashire (24 LBbG and 1 HG), Skokholm, Pembrokeshire (72 LBbG and 2 HG).

note 6 :

Orange ring with a black four alpha-numeric code : starting cipher '3' or '2' -separated by a colon ':' and followed by three letters (on right leg) and 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. : 3:AAA ... 3:ZZZ

note 4 : in 2014, 314 birds have been ringed (3:AAA-3:AZZ).

note 5 : the project has some difficulties with the follow-up by mail of the resightings. Do please use the submit-page.

note 6 :

Green ring with a white four alpha-numeric code, starting letter "F" follwoed by a colon ":" and three numbers (on right tarsus) and metal ring (on left tarsus).

note 1 : birds ringed in Florida, USA.

note 2 : used codes are F:001, F:002,  

Green ring with a white three alpha-numeric code.

note 1 : birds ringed in Europoort, Rotterdam by Norman van Swelm.

note 2 :