European Wren

Yellow ring with a black two alpha-numeric code (letter/number or number/letter) (on either leg) and metal ring (on opposite leg).

note 1 : birds ringed St Kilda, Scotland.

note 2 : 

Combination of :
* One c-ring over metal ring (on left tarsus)
* 2 c-rings (on right tarsus).

note 1 : used colours are : red, blue, white, yellow and green.

note 2 :

Combination of :
* c-rings (on one tarsus).
* metal ring (on opposite tarsus).

note 1 : used colours are : red, black, blue, white, green and brown.

note 2 : birds ringed on St Kilda, Outer Hebdrides, Scotland.

note 3 :