Combination of 4 c-rings :
* 1 c-ring on each tibia.
* 1 c-ring on each tarsus.
* metal ring on left tarsus.
note 1 : used colours are : blue, lime, orange, yellow.
note 2 : rings are found on tibia and tarsus on both legs.
note 3 : studies have focussed upon pulli so far, although some adults and fledged nestlings have also been colour ringed.
note 4 : no new birds ringed since 2008 and very small numbers ringed.
note 5 :