Gulls

species: 
Iceland Gull
scientific name: 
Larus glaucoides
notes: 

Yellow ring with a black four alpha-numeric code : letter 'T' followed by ':' and three alpha-numeric code.

note 1 : these birds were ringed in recent years on the east coast of Scotland. 

note 2 :

email sighting submit: 
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).
countries where ringed: 
Scotland.
First letter/number (of the c-ring): 
T