Yellow-legged Gull

Yellow ring with a black four alpha-numeric code : number/letter/number/colon ":"/ letter 'A'.

note 1 : the last letter 'A' is the country code.

note 2 : used codes re : 1A1:A, 2A1:A ... 0Z9:A, 0Z0:A.

note 3 :  

Yellow ring with a black 3 alpha-numeric code, starting letters "S" or "T" or "U" or "V". 

note 1 : birds ringed since 2017.

note 2 : birds ringed on Lanzarote.

note 3 : used letters are A, C, F, H, J, L, M, N, P, R, T, U, V, W and X.

note 4 : used numbers are 0 - 9.

note 5 : 

Yellow ring with a black 3 alpha-numeric code, starting letters "A" or "C" or "F" or "M" or "R" followed by number and letter (letter/number/letter).

note 1 : birds ringed since 2010.

note 2 : birds ringed on Gran Canaria.

note 3 : used letters are A, C, F, H, J, L, M, N, P, R, T, U, V, W and X.

note 4 : used numbers are 0 - 9.

note 5 : 

White wingtag with a black three alpha-numeric code.

note 1 : used codes are : letter "E" followed by a letter and a number.

note 2 :  

Yellow ring with a black four alpha-numeric code.

note 1 : used codes are X001-X500, but also letters are used.

note 2 : 

Red ring with a white three alpha-numeric code (number/number/colon ":") letter 'T') on one leg and metal ring (on other leg).

note 1 : letter 'T' with a colon ":" is the scheme identifier.

note 2 : birds can be also wingtagged.

note 3 :   

Black ring with a white four alpha-numeric code :
​*starting letter 'F' and three numbers
OR
* starting letter 'F' and two numbers and one letter.

note 1 : the colour ring is always on left tarsus, with a metal ring on the right tarsus.

note 2 : all birds are from RIAS, a Wildlife rehabilitation and investigation centre in the south of Portugal.

note 3 : this project is for Larus fuscus and Larus michahellis, Started in December 2010 and ended in 2019

note 4 : Codes used: F000-F999, F00A-F99A, F00B-F99B, F00C-F99C, F00D-F99D and F00E-F99E

note 5 :

Blue ring with a white 4 alpha-numeric code (starting letter 'V' and a 'dot' after the first letter).

note 1 : used codes are : V.000 - V.ZZZ

note 2 : only a few of those codes are used for this species.

note 3 :

Yellow ring with a black 4 alpha-numeric code, starting letter 'V'.

note 1 : used code are V000-VZZZ.

note 2 : rings could be used on L. fuscus !

note 3 :

White ring with a black four alpha-numeric code : starting letter 'N' followed by a colon (:)

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 2012.

note 4 : codes of spanish project are maneged by EBD.

note 5 :