Gulls

species: 
Great Black-backed Gull
scientific name: 
Larus marinus
notes: 

White code with a red four alpha-numeric code (last letter ":C") (number, letter, number, letter ":C" OR number,number, letter, letter ":C")

note 1 : four alpha-numeric code of which the last letter is always a "C", site identifier for Clyde, ringing area in Scotland.

note 2 : a colon (:) is always following the first three alpha-numeric code. For example : 1A1:C , 0Z0:C, ect...

note 3 : note used letters are : F, I, O and Q.

email sighting submit: 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
White [W]
colour-ring code (of the c-ring): 
Four alpha-numeric code (4 letters/numbers).
countries where ringed: 
Scotland.
Last letter (of the c-ring): 
:C