Terns

species: 
Little Tern
scientific name: 
Sternula albifrons
notes: 

Blue ring with a white three alpha-numeric code, starting letter "S" followed by two numbers or number/letter.

note 1 :

website sighting submit: 
Oficina de Anillamiento
email sighting submit: 
website information: 
Oficina de Anillamiento
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Dark Blue [B]
colour-ring code (of the c-ring): 
Three alpha-numeric code (3 letters/numbers).
countries where ringed: 
Spain.
First letter/number (of the c-ring): 
S