Crows

species: 
Rook
scientific name: 
Corvus frugilegus
notes: 

White wingtag with a black two alpha code (on each wing) (letter-letter).

note 1 : most birds also have dark green coded legring (https://cr-birding.org/node/1448 or https://cr-birding.org/node/6917).

note 2 :

email sighting submit: 
colour-ring type: 
Wingtag : 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: 
Hungary.