Gulls

species: 
Herring Gull
scientific name: 
Larus argentatus
notes: 

Yellow ring with a black four alpha-numeric code, number/number/number / ending letter ":S" (on left tarsus) and metal ring (on right tarsus).

note 1 :  

email sighting submit: 
contactperson: 
Adam Cross
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Yellow [Y]
colour-ring code (of the c-ring): 
Four alpha-numeric code (4 letters/numbers).
colour-ring position (of the c-ring): 
Tarsus left.
countries where ringed: 
United Kingdom.
Last letter (of the c-ring): 
:S