Ducks

species: 
Common Shelduck
scientific name: 
Tadorna tadorna
notes: 

Green ring with white two alpha code.

note 1 :

colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Dark Green [G]
colour-ring code (of the c-ring): 
Two alpha code (2 letters).
countries where ringed: 
Germany.