Terns

species: 
Common Tern
scientific name: 
Sterna hirundo
notes: 

Black ring with a white three alpha code, starting letter "S".

note 1 : used codes : SAA - SZZ

website sighting submit: 
European colour-ring Birding submit
email sighting submit: 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Black (Niger) [N]
colour-ring code (of the c-ring): 
Three alpha code (3 letters).
countries where ringed: 
Senegal.
First letter/number (of the c-ring): 
S