Waders

species: 
Ruff
scientific name: 
Calidris pugnax
ref. number: 
IWSG 3102
notes: 

Combination of :
​* orange ring (on left tarsus).
​* yellow ring with a black three alpha-numeric code (on right tarsus).

note 1 : used code is : letter/number/number.

note 2 :  

website sighting submit: 
Ornithological Station, Museum and Institute of Zoology of the Polish Academy of Sciences
email sighting submit: 
colour-ring type: 
Legrings : combination of one coded and uncoded rings.
countries where ringed: 
Poland.