Avocets

Combination of 3 c-rings :
* 2 c-rings (on left or right tibia)
* yellow ring over a metal ring (on right tibia).

note 1 : the project started in 1990 by the North West Norfolk Ringing Group with the ringing annually since.

note 2 : used colours are black, white, red, yellow, green, lime-green, dark-blue, pale-blue, orange.