Lesser Black-backed Gull

Red ring with a white 3 alpha-numeric code.

note 1 : metal ring over c-ring.

Red ring with awhite four alpha-numeric code, starting letter 'C'

note 1 : up to 2014, a total of 5477 rings were delivered since 2001-2013.

note 2 : there can exist small check marks in the code (like dots between characters), inform them also.

note 3 :

Red ring with a white three alpha-numeric code, starting letter 'S'.

note 1 :

Red ring with a white three alpha code.

note 1 : only letters are used on our rings, numbers are not used.

note 2 :  the following letters have not been used:-   E,  G,  I,  M,  O,  Q.

note 3 :   on the 4 letter codes there is a check spot between two of the letters.

note 4 :   most rings are fitted so that the code reads from bottom upwards.

Red ring with white three alpha-numeric code (letter E or F + 2 numbers) (on one leg) and yellow ring (code E) (on other leg).

Red ring with white three alpha-nuemric code (letter E + 3 numbers) (on one leg) and yellow ring (code E) (on other leg).

note 1 :  birds are ringed during June 2004.

White ring with a black three alpha-numeric code (3 numbers and letter 'N' or 'K' and metal ring (on right tibia).

note 1 :

Red ring with a yellow three alpha-numeric code (3 numbers and letter 'N' or 'K' and metal ring (on right tibia).

note 1 :

Red ring with a 2 alpha-numeric code code

note 1 : rings are placed above the knee (on the tibia) for better observation results in the colony (high vegetation) and on rubbish-dumps. All other colours (with vertical placed codes) above the knee are also part of this project.

note 2 : In some series  used dots (1.A), colons (1:A) or single or double bars (1|A or 1||A). Those additional marks are part of the code

note 3 : In some series is an additional plain marker present at the other tibia, this marker is part of the combination.

note 4: Same codes can be used by other large gull species. If you have doubts about the species and/or code, please note the age and position of all the rings, including the metal ring.

note 5: used letters/numers are : A, B, C, D, E, F, G, H, J, K, L, M, N, P, R, S, T, U, V, W, X, Y, Z, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, + and =. Only the letters I, O and Q are never used

note 6: In this project are also used a combination of two coloured rings with both one letter or number at each tibia.

Red ring with a white four alpha-numeric code, starting letter 'H' and three alpha-numerics.

note 1 : examples  are H99X, H123, HA67, HX43, H789, H23A.

note 2 : rings are to be read from bottom to top, most rings have a “checkpoint”.

note 3 : birds are ringed at Amrum (SH) (700) and at Helgoland (SH) (600) and at other places in Schleswig- Holstein.

note 4 : some rings are used at Herring Gulls, see this species. 

Red ring with a white four alpha-numeric code, starting letter 'A' and 3 numbers.

note 1 :  used codes are A001-A300.

note 2: birds are ringed near Stora and Lilla Karlsö [SW Gotland, Baltic Sea] in Sweden.