Geese

species: 
Greylag Goose
scientific name: 
Anser anser
notes: 

Yellow ring with black four alpha-numeric code : first letter "S" followed by three numbers.

note 1 : 

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): 
Four alpha-numeric code (4 letters/numbers).
countries where ringed: 
Poland.
First letter/number (of the c-ring): 
S