Wigeon

Yellow ring with a two alpha code, sepatared by a bar : A | A and A | = and A | +

note 1 : 

Pale blue nasal saddle with a black two numeric code.

note 1 : used numbers are : 0 - 9.

note 2 : example:55|55|55

note 3 : project, "Plan Complementario de I+D+ i de Biodiversidad en Extremadura (Biodiversidad y Cambio Global, BioCaBal-2030)"

note 4 : birds ringed in Extremadura, Spain since 2023.

note 5 :

Pale blue nasal saddle with a black two alphanumeric code.

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 : example:5M|5M|5M

note 4 : project, "Plan Complementario de I+D+ i de Biodiversidad en Extremadura (Biodiversidad y Cambio Global, BioCaBal-2030)"

note 5 : birds ringed in Extremadura, Spain since 2023.

Pale blue nasal saddle with a black two alpha code.

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

note 2 : example:MM|MM|MM

note 3 : project, "Plan Complementario de I+D+ i de Biodiversidad en Extremadura (Biodiversidad y Cambio Global, BioCaBal-2030)"

note 4 : birds ringed in Extremadura, Spain since 2023.

note 5 :

Orange ring with a black two alpha-numeric code.

note 1 : some symbols like "=" or "+" are used as second symbol.

note 2 :

Red ring with a white two alpha code.

note 1 : first letters are : A, B, C, D.

note 2 :

Red ring with a white two alpha-numeric code.

note 1 : first letters are : A, B, C, D.

note 2 :

Green ring with a white two alpha-numeric code (on left leg) and metal ring (on right leg).

note 1 : to be read from the bottom up.

note 2 : a bar is used to separate some of the letters i.e., A|A, |AA, AA|

note 3 : birds ringed in Britain & Ireland, Iceland, Denmark, Finland.

note 4 :

White ring with a black three alpha-numeric code, starting letter "J".

note 1 : code is written vertical on the ring.

note 2 :

Dark-blue ring with a yellow two alpha-numeric code (on left leg) and metal ring (on right leg).

note 1 : to be read from the bottom up.

note 2 : a bar is used to separate some of the letters i.e., A|A, |AA, AA|

note 3 : birds ringed in Britain & Ireland, Iceland, Denmark, Finland.

note 4 :