Great Black-backed Gull

White ring with a black five alpha-numeric code, starting letter 'C'.

note 1 : up to 2014,a  total of 4 rings delivered since 1995.

note 2 :  

White ring with a black code four alpha-numeric code, starting letter 'C'.

note 1 : up to 2014, a total of 3 rings were delivered since 1994.

note 2 :

Orange ring with a 4 alpha-numeric code (last letter 'M' after a 'colon' (on left leg) and metal ring (on right leg).

note 1 : Manx RG use orange ring with a black code : nxx:M , where n=letter and x=number).

note 2 : 

Orange ring with a black code three alpha-numeric code (starting letter B ”, followed colon ":" and two numbers).

note 1 : two birds ringed with an orange ring with a four alpha-numeric code.

note 2 :

Black ring with a white four alpha-numeric code, starting letters 'KU' or 'KX'.

note 1 :   

Green ring with a white 4 alpha-numeric code (starting letter 'H') and metal ring (on other leg).

note 1 : used codes at Schleswig-Holstein in 2014 are HLC4, HL3A ...

note 2 : rings are to be read from bottom to top.

note 3 :

Red ring with a white four alpha-numeric code : starting letter "W" / ":" (colon) / number / number / number.

note 1 : used codes are : W:001 - W:999 - W:000

note 2 :  c-ring on right tarsus and metal ring on left tarsus.

note 3 :

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 Lesser Black-backed gull 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 '4' -sepaterd 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. : 4:AAA ... 4:ZZZ

note 4 : in 2014, 353 birds have been ringed of which 7 with GPS-loggers.

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

note 6 :

Yellow ring with a black three alpha code, first letter 'D' followed by a colon ':' and two letters (on left tarsus) and metal ring (on right tarsus).

note 1 : birds ringed in 2013 (20) ; birds ringed in 2014 (18).

note 2 : birds ringed by Goldcliff Ringing Group in South-east Wales.

note 3 :