Peregrine Falcon

Purple ring with a white two alpha-numeric code (number/letter) or (letter/number).

note 1 : used codes are : 1A-1Z, 2A-2Z, 3A-3Z, 4A-4Z, 5A-5Z, 6A-6Z, 7A-7Z, 8A-8Z, ...   

note 2 : used codes are : X6-X9,  

Dark-green ring with a white two alpha-numeric code (letter/number).

note 1 : used codes are : A0-A9, B0-B9, C0-C9, H0-H9, K0-K9, L0-L9, N0-N9, P0-P9, R0-R9, S0-S9, T0-T9, V0-V9, Y0-Y9, Z0-Z9. 

note 2 :

Black ring with a white two alpha-numeric code (letter/number).

note 1 : used codes are / A0-A9, B0-B9, C0-C9, E0-E9, H0-H9, K0-K9, Z0-Z9,   

note 2 : 

Orange ring with a black two alpha-numeric code (letter/number) (on left tarsus) and metal ring (on right tarsus).

note 1 : used codes are A3 till B9, C3 till D9, F3 till H9, J3 till K9, L3 till N9, P3 till R9, S3 till T9, V3 till W9, X3 till Y9 till Z9.

note 2 : some codes use a punctuation between the alpha-numerics.
used codes are : 0.A...0.Z, 1.A...9.Z.  

note 2 : take notice of the puntuation / a dot '.' between the letter and number ... ref. this project : http://www.cr-birding.org/node/3186

note 3 :            

Orange ring with a black two numeric code (on left tarsus) and metal ring (on right tarsus).

note 1 : used codes are : 10 till 99.

note 2 : 

Orange ring with a black two alpha code (on left tarsus) and metal ring (on right tarsus).

note 1 : used codes are : AA till ZZ.

note 2 :

White ring with a green two alpha code (on left tarsus) and metal ring (on right tarsus).

note 1 : used codes are : ZA-ZI,

note 2 :

White ring with a green one numeric code (on left tarsus) and metal ring (on right tarsus).

note 1 : used codes are : A till Z.

note 2 :

White ring with a green one alpha code (on left tarsus) and metal ring (on right tarsus).

note 1 : used codes are : A till Z.

note 2 :

Black (anodised) ring with a white (superposed) two numeric code.

note 1 : used codes are: 0-7 over 0-9,   

note 2 : birds ringed in Ireland.

note 3 :