Eurasian Tree Sparrow

Lime (light-green) ring with a black two numeric code (on left leg). 

note 1 :

Combination of 3 c-rings:
* 1 white/green broad striped ring (=project marker) and metal ring (on one leg)
* 2 c-rings (on other leg).

note 1 : colours for 2 c-rings : black, dark blue, dark green, light green, orange, red, white, yellow.

note 2 : birds ringed in the UK, Grampian Region.

Black ring with a white two alpha-numeric code.

note 1 : codes used: B/number

note 2 : birds ringed in the UK, North Yorkshire.

note 3 :

Combination of a metal ring (on right leg) and a c-ring (on left leg).
During 2015 c-ring on right tarsus)

note 1 : the colour of the c-ring is changed every year.
* yellow in 2013.
* red in 2014 (some 150 nestlings).
* violet in 2015 (on right tarsus).
* white in 2016 (on right tarsus).

note 2 :

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

note 1 : used colours are : red, light-blue, dark-green, white, yellow and orange.

note 2 : birds ringed in Wiltshire, United Kingdom.

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

note 1 : birds ringed in the UK, North Yorkshire.

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

note 1 : birds ringed in the UK, Grampian Region.

note 3 :

Red ring with a white code/letter "X" above metal ring (on left leg) and 2 plain colour rings (on right leg).

note 1 : birds ringed in the UK.

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

note 1 : birds ringed in the UK, county Greater London.

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

note 1 : birds ringed in the UK, county Greater London.