Yellow-legged Gull

Orange ring with a black four alpha-numeric code : xxx and letter 'H', where x can be a letter or a number.

note 1 :

Orange ring with a black four alpha-numeric code : letter 'B' / number / letter / letter.

note 1 :  this project is coordinated by the Local Conservation Authorities of the Balearic Islands.

note 2 : used code is a combination of letter, number, letter, letter.

note 3 : used two last letters are : A, B, C, D, E, F, H, J, K, L, M, N, P, R, T, U, V, X, Y and Z. The letters G, I, O, Q, S and W are not used to avoid confusion.

note 4 : a first serie of 2000 rings with the following first two codes will be used : BO (archipelago of Cabrera), B1 (Menorca), B2 (Ibiza and Formentera), B3 (Dragonera) and B4 (Mallorca).

note 5 : the first letter is B ; dark-orange could be confused with dark-red.

note 6 :  

Black ring with a white four alpha-numeric code : number / number / number / letter 'M'.

note 1 :  

Black ring with a white three alpha-numeric code : letter 'V' / number / letter.

note 1 :  

Black ring with a white four alpha-numeric code :
- letter 'G' / number '0' ; number / number.
- letter 'G' / number '6' / number / number.
- number '0' / letter 'G' / number / number.
- number '1' / letter 'G' / number / number.

note 1 :  

Black ring with a white four alpha-numeric code : letter "A" letter / number / letter.

note 1 :

Green ring with a white four alpha-numeric code : letter 'P' / letter / letter / letter.

note 1 :  

Red ring with a white four alpha-numeric code.

note 1 :  

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

note 1 :  Larus michahellis 'lusitanius'

note 2 :

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

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

note 2 : used numbers are 0-9.

note 3 : birds ringed since 2012.

note 4 : ex. : N:A3X, N:A0A, ...