Common Tern

Red ring with a three alpha-numeric code, starting letter "I".

note 1 : 

Yellow ring with a three alpha-numeric code, starting letter "I".

note 1 : used codes are : I00-I99, IAA-IZZ, IA0-IZ9, I0A-I9Z.

note 2 :

Red ring with a white three alpha code, starting letter "Y".

note 1 : used codes are YAA-YZZ.

note 2 :

Light-green ring with a white three alpha code, starting letter "Y".

note 1 : used codes are YAA-YZZ.

note 2 :

Dark-green ring with a white three alpha code, starting letter "Y".

note 1 : used codes are YAA-YZZ.

note 2 : 

Blue ring with a white three alpha code, starting letter "Y".

note 1 : used codes are YAA-YZZ.

note 2 : 

Orange ring with a three alpha code, starting letter "Y".

note 1 : used codes are YAA-YZZ.

note 2 : 

Orange ring with a black three numeric code.

note 1 : 

Black ring with a white three alpha code, starting letter "Y". 

note 1 : 

Yellow ring with a three alpha code, starting letter "Y".

note 1 : used codes are YAA-YZZ.

note 2 : in a not-agreed project, used codes are :  letter "M" / letter / letter.

note 3 :