Woodpeckers

species: 
Great Spotted Woodpecker
scientific name: 
Dendrocopos major
notes: 

Yellow ring with a black three alpha-numeric code (letter/number/number) (on one leg) and metal ring (on other leg).

note 1 :  used letters are A, C, E and H.

note 2 :  

website sighting submit: 
Ornithological Station, Museum and Institute of Zoology of the Polish Academy of Sciences.
email sighting submit: 
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.