Waders

species: 
Eurasian Curlew
scientific name: 
Numenius arquata
notes: 

Yellow flag with a black three alpha-numeric code (letter/number/number) (on right tibia) and metal ring (on left tibia).

note 1 :

colour-ring type: 
Flag : 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).
colour-ring position (of the c-ring): 
Tibia right.
countries where ringed: 
Poland.