Dark-green ring with a white three alpha-numeric code, starting letter "P" followed by two numbers.
note 1 : project starts in 2024.
note 2 :
Red ring with a white 2 alpha code.
note 1 :
Yellow ring with a black three alpha-numeric code.
White ring with a black 2 alpha code.
note 1 : all birds ringed in Britain & Ireland, from 2012 onwards.
Dark-green ring with a white three alpha-numeric code, starting letter "A" (on one leg) and metal ring (on other leg).
Black ring with a white two alpha-numeric code.
note 1 : used codes are : A1-A0.
Red ring with a white 1 alpha code.
note 1 : birds ringed as juvenile.
Blue ring with a white 1 alpha code.
note 1 : birds ringed as adult.
Green ring with a white 1 alpha code.
White ring with a black 1 alpha code.