Herring Gull

White ring (on right tarsus) with black 5 alpha-numeric code (letter M and 3 numbers + Q in the end) and metal ring (on left tarsus).

note 1: used codes are M001Q-M199Q.
note 2: birds are ringed near Stora Karlsö, SW Gotland, Baltic Sea, Sweden.

White ring with a black four alpha-numeric code, starting letter 'R', followed by letter, number, letter OR number, letter, number. 

note 1 : do please pay attention to the colon “R:” as this is very important.

note 2 : the birds are ringed on the Nature Reserve of Lilleau Niges,  Re Island, Charente Maritime department, France.

Grey (silver) ring with a red two alpha code.

note 1 : used codes are with a ":" or a "+" between the two letters.

note 2 :

Yellow ring with a black 4 alpha-numeric code (starting letter 'T' followed by a colon and 3 numbers) (on left leg) and metal ring (on right leg). 

Yellow ring with a 4 alpha-numeric code (starting letter 'T' followed by a colon and two numbers and one letter (on left leg) and metal ring (on right leg). 

note 1 : birds ringed in North East Scotland.

note 2 : starting 2011 1420 birds have been ringed by early 2014. 

note 3 : 

Yellow ring with black four alpha-numeric code (ending letter 'B').

note 1 : birds were ringed in the UK near Kings Lynn. 

note 2 : birds are ringed near Cambridge (Cambs) or Doncaster (North Notts).

note 3 :

Yellow ring with black 4 alpha-numeric code, startuing letter 'C'.

note 1 : up to 2014, a total of 2702 rings were delivered since 1996-2007.

note 2 :

White ring with black 4 alpha-numeric code, stareting letter 'C'.

note 1 : up to 2014, a total of 492 rings were delivered 1993-2001.

note 2 :

Red ring with yellow 4 alpha-numeric code (3 numbers and letter “N” or “K”) (on left tarsus) and metal ring (on right tibia).

Red ring with white 4 alpha-numeric code (3 numbers and letter “A”) (on left tarsus) and metal ring (on right tibia).