Skuas

species: 
Great Skua
scientific name: 
Stercocarius skua
notes: 

White ring with a black two alpha code.

note 1 :

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 alpha code (2 letters).
countries where ringed: 
United Kingdom.