Terns

species: 
Arctic Tern
scientific name: 
Sterna paradisaea
notes: 

White ring with a black two numeric code (on one leg) and metal ring (on other leg).

note 1 :

website sighting submit: 
European colour-ring Birding submit
email sighting submit: 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
White [W]
colour-ring code (of the c-ring): 
Two numeric code (2 numbers).
countries where ringed: 
The Netherlands.