Herring Gull

Orange ring with a black 5 alpha-numeric code (starting letter 'C').

note 1 : Up to 2014, a total 547 of rings are delivered 2001-2004.

note 2 :

Yellow ring with a black 5 alpha-numeric (starting letter 'K')

note 1 : KJxx or KJxxx  (where x is number or letter).
note 2 : 300 birds ringed in Russian Karelia during 2001-2007, most without metal ring.

White ring with black 5 alpha-numeric code, starting letter 'C'.

note 1 : up to 2014, a total of 7452 rings were delivered since 1995-2012.

note 2 :

Orange ring with a black 5 alpha-numeric code (starting letter 'K').

note 1 : KJxx or KJxxx : (where x is number).
note 2 : note 1100 birds ringed in Russian Karelia, mostly without metal ring.

Dark-green ring with a four alpha code (starting letter "P").

note 1 : after the "P" a 'dot' is to be found followed by three letters.

note 2 : birds (P stands for pullus) ringed as chick on Texel, The Netherlands.

note 3 : steel ring on opposite tibia.

note 4 : 

Dark Green legring with a four alpha code (starting letter "F").

note 1 : after the "F" a 'dot' is to be found followed by three letters.

note 2 : birds (F stands for female) ringed as adult on Texel, The Netherlands.

note 3 : steel ring on opposite tibia.

note 4 :

Dark-green ring with a four alpha code (starting letter "M").

note 1 : after the "M" a 'dot' is to be found followed by three letters.

note 2 : birds (M stands for male) ringed as adult on Texel, The Netherlands.

note 3 : steel ring on opposite tibia.

note 4 :

Dark-green legring with a Four alpha code (starting letter "K").

note 1 : after the "K" a 'dot' is to be found followed by three letters.

note 2 : birds ringed as chick on Texel, The Netherlands.

note 3 : steel ring on opposite tibia.

note 4 : 

Combination of a pink 3 alpha coded wingtag and a pink 3 alpha coded legring. 

note 1: birds ringed during 2011 on Sable Island, Nova Scotia, North America.

Dark-green ring with a four alpha code (starting letter "Y").

note 1 : after the "Y" a 'dot' is to be found followed by three letters.

note 2 : birds ringed (irrespective of sex and age) near Ijmuiden, The Netherlands.

note 3 : steel ring on opposite tibia or tarsus.

note 4 :