Terns

species: 
Sandwich Tern
scientific name: 
Thalasseus sandvicensis
notes: 

Red ring with a white three alpha-numeric code.

note 1 : used codes are :  G00-G99, R00-R99, S00-99 and U00-99.

note 2 :

website sighting submit: 
Ringmärkningscentralen.
email sighting submit: 
website information: 
Riksmuseum Stockholm.
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Red [R]
colour-ring code (of the c-ring): 
Three alpha-numeric code (3 letters/numbers).
countries where ringed: 
Sweden.
First letter/number (of the c-ring): 
S or U