White ring with a black 3 alpha-numeric code o(n right leg) and with no metal ring.
note 1 : 71 chicks were ringed in 2008.
White ring with a black three alpha-numeric code.
note 1 : the project is in cooperation with Spain and 1344 birds ringed since 2006.
note 2 :
Red ring with white 2 alpha code (on one leg) and metal ring (on other leg).
note 1 : during 2011 four pulli have been ringed.
note 2 : used codes in 2011 are VR, HZ, FR, FY.
note 3 :
