Red ring with a white two numeric code (on left leg- and metal ring (on right leg).
note 1 :
Black ring with a white two numeric code.
note 1 : birds ringed Shetland Isles, Scotland.
note 2 : used codes are 50-97.
note 3 :
Yellow ring with a black three alpha-numeric code.
Dark-green ring with a white two alpha-numeric code (on left tarsus) and metal ring (on right tarsus).
note 1 : project starts during summer 2020.
note 2 :
Dark-green ring with a white four alpha-numeric code, starting letter 'E'.
note 1 : most birds are ringed at birdcare center 'De Wulp' (Den Haag, Netherlands); start of the project in 2018.
note 2 : used codes are E001-E999.
Dark-green ring with a white 4 alpha-numeric code, starting letter 'C'.
note 1 : up to 2014, a total of 1 ring was delivered since 1997.
White ring with a black 3 alpha-numeric code, starting letter 'C'.
note 1 : up to 2014, a total of 2 rings were delivered since 1996.
Yellow ring with a a black two numeric code (on left leg) and metal ring (on right leg).
note 1 : birds ringed since 2016 around Medemblik (NL).
Red ring with a white 3 alpha-numeric code (on right tarsus) and metal ring (on left tarsus) : letter/number/number.
White ring with a black five alpha-numeric code, starting letter 'C'.