White ring with a black two alpha code.
note 1 : up to 2014 total 181 rings delivered since 2013-2014.
note 2 :
Black ring with white 2 numeric code (on one leg) and metal ring (on other leg).
note 1 : up to 2014, a total of 70 rings delivered since 2011.
Red ring with white 2 alpha-numeric code (on one leg) and metal ring (on other leg).
note 1 : the 2 alpha-numeric code consists of 1 letter and 1 number.
note 2 : up to 2014, a total of 50 rings delivered since 2008.
note 3 :
c-ring (on one leg) and metal ring.
note 1: in Shetland the c-ring is on the left leg, while in Orkney the c-ring is on the right leg.
Combination of 1 c-ring above metal ring above 1 c-ring.
note 1 : used colours are grey, yellow, red, orange, white, dark-blue and light-green.
Yellow ring with black 2 alpha-numeric code (on one leg) and metal ring (on other leg).
note 2 : over 200 birds are ringed in Finland since 2006.