Ducks

species: 
Mallard
scientific name: 
Anas platyrhynchos
notes: 

Black ring with a white three alpha-numeric code (letter/number/number)

note 1 : used codes are : A01-A00, B01-B00, ...

note 2 : 

email sighting submit: 
email sighting submit (2): 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Black (Niger) [N]
colour-ring code (of the c-ring): 
Three alpha-numeric code (3 letters/numbers).
countries where ringed: 
Hungary.