Ducks

species: 
Mallard
scientific name: 
Anas platyrhynchos
notes: 

Dark-green ring with white three alpha-numeric code. (1 letter and 2 numbers).

note 1 : used letters are L, S, P, K, W and T for Warsaw and subsurbs of Warsaw.
contact : Jan Rapczyński. 

note 2 : other letters are for Gdansk, Olsztyn, Szczecin.
contact : Wlodzimierz Meissner.

note 3 : 

email sighting submit: 
email sighting submit (2): 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Dark Green [G]
colour-ring code (of the c-ring): 
Three alpha-numeric code (3 letters/numbers).
colour-ring position (of the c-ring): 
Tarsus right.
countries where ringed: 
Poland.
Images: