House Sparrow

White ring with a black three numeric code.

note 1 :

Orange ring with a black 3 alpha code (on left leg) and metal ring (on right leg).

note 1 : first letter S or T.

note 2 : birds ringed in the UK, county Gloucester.

note 3 : 

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

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

note 2 : birds ringed in county Oxfordshire, UK.

note 3 :

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 :

Dark-blue ring with a white three alpha code (on left leg) and metal ring (on right leg).

note 1 : used codes are : A + letter + letter.

note 2 : birds ringed in Cumbria.

note 3 :

Combination of 3 c-rings :
* 2 c-rings (on left leg).
* 1 c-ring above or below metal ring (on right leg).

note 1 : used colours are red, dark-blue, orange, yellow, purple, dark-green, pale-blue, pink, black, white, grey.

note 2 :  birds ringed at Exmoor Zoo, Bratton Fleming, North Devon, UK.

note 3 : 

Red ring with a white 2 alpha-numeric code (on left leg) and metal ring (on right leg).

note 1 : codes used: "letter+number", A1-9, B1-9, etc; not used: O, Q, I, 0.

note 2 : birds ringed in Bangor, Co Down; Northern Ireland.

note 3 : 

Black ring with a white 3 alpha code (on left leg) and metal ring (on right leg).

note 1 : codes used: AAA-AZZ

note 2 : birds ringed in county Cornwall, UK.

note 3 : 

Dark-green ring with a white 2 numeric code (on left leg) and metal ring (on right leg).

note 1 : codes used 00-99.

note 2 : birds ringed in Porthmadog, Wales.

note 3 : 

Red ring with a white two alpha code.

note 1 : birds ringed in the Dept. of Loir et Cher, France.

note 2 :