Warblers

species: 
Aquatic Warbler
scientific name: 
Acrocephalus paludicola
notes: 

Orange ring with a black 3 alpha-numeric code.

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): 
Orange [O]
colour-ring code (of the c-ring): 
Three alpha-numeric code (3 letters/numbers).
countries where ringed: 
Poland.