Terns

species: 
Arctic Tern
scientific name: 
Sterna paradisaea
notes: 

Black ring with a white 2-numeric code.

note 1 : birds ringed as pulli have the c-ring on their left tarsus and metal ring on the right.
Those ringed as post-breeding, fledged birds have the c-ring on the right tarsus and the metal on the left.

note 2 : used numbers are from 00 - 99.

note 4 : birds ringed (since 2015) as pulli from Dublin (Ireland) colonies and as adults in a post-breeding aggregation on the Dublin coast.

note 5 : 

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): 
Two numeric code (2 numbers).
countries where ringed: 
Ireland.