Eurasian Mew Gull

White ring with a black four alpha code, always starting with E.

note 1 : codes EAAA-EXZZ can be reported by  http://submit.cr-birding.org/projects/12/

note 2 : codes EYAA-EZZZ can be reported by https://cr-birding.org/nl/node/4507

note 3 :

White ring with a black four alpha-numeric code, starting letter "X"  ("X", number, number, letter).

note 1 : used last letters are "A" till "F" (until 2023).  

note 2 : 

Dark-blue ring with a white four alpha-numeric code: starting with the country-code "5", followed by 2 numbers and one letter (E, H or J).

note 1 :

White ring with a black four alpha-numeric code.

note 1 : used codes are : K001 ... K200.

note 2 :

Yellow ring with a black four alpha-numeric code : first letter 'P' followed by a letter and two numbers.

note 1 : used codes are PAxx-PAxx, PCxx, PExx till PZxx (where x = number).

note 2 : 

Yellow ring with a black four alpha-numeric code, starting letter 'N' followed by three alpha-numeric code (on left tarsus) and metal ring (on right leg).

note 1 : used letters are A, C, F, H, J, L, M, N, P, R, T, U, V, W and X.

note 2 : used numbers are 0 - 9.

note 3 : birds ringed since 2018.

note 4 :

White ring with a black four alpha code, starting letters "E".

note 1 : used codes are : codes EYAA-EZZZ

note 2 : code EZSM is a Black-headed Gull.

note 3 :

White ring with a five alpha-numeric code : starting letter 'J and four letters/numbers.

note 1 : birds are ringed in South-Norway.

note 2 : 

Blue ring with a white four alpha-numeric code. 

note 1 : very exceptionally one bird has been ringed with code 5E55.

note 2 :

Yellow ring wioth a black four alpha-numeric code, starting letter 'C'.

note 1 : up to 2014, a total of 50 rings were delivered since 2002.

note 2 :