Crows
species:
Rook
scientific name:
Corvus frugilegus
notes:
Yellow 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):
Yellow [Y]
countries where ringed:
Hungary.
