Ducks

species: 
Mallard
scientific name: 
Anas platyrhynchos
notes: 

Yellow ring with black three alpha-numeric code (1 letter, 2 numbers).

note 1 : the main aim is to recognize migrations and movements of urban population of Mallards in Poland.

note 2 : 

email sighting submit: 
email sighting submit (2): 
website information: 
Interrex
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Yellow [Y]
colour-ring code (of the c-ring): 
Three alpha-numeric code (3 letters/numbers).
countries where ringed: 
Poland.