Sparrows

species: 
Eurasian Tree Sparrow
scientific name: 
Passer montanus
notes: 

White ring with a black three alpha-code, starting letter 'C' followed by letter/letter (on left tarsus) and metal ring (on right tarsus).

note 1 :  used codes are : CAA till CZZ. 

note 2 : 

email sighting submit: 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
White [W]
colour-ring code (of the c-ring): 
Three alpha code (3 letters).
colour-ring position (of the c-ring): 
Tarsus left.
countries where ringed: 
Finland.