Sparrows

species: 
House Sparrow
scientific name: 
Passer domesticus
notes: 

Yellow ring with a black 3 alpha-numeric code starting with "X" (on left leg) and metal ring (on right leg). 

note 1 : codes used : X + letter + number OR X + number + letter.

note 2 : birds ringed in county Oxfordshire, UK.

note 3 :

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): 
Three alpha-numeric code (3 letters/numbers).
colour-ring position (of the c-ring): 
Tarsus left.
countries where ringed: 
United Kingdom.
First letter/number (of the c-ring): 
X