Green ring with white two alpha-numeric code (on one leg) and metal ring (on the other leg).
note 1 : Birds were ringed in Lower Saxony, Germany since 2002.
note 2 : To read the ring, turn your head 90 degree to the left.
note 3 :
Silver/Grey ring with a black 2 alpha-code.
note 1 : birds ringed during 2011 in the Czech Republic.
note 2 : information websites : www.tyto.cz and http://www.czechringing.com/
