Gulls
Green ring with white 4 alpha-numeric code (starting letter A') (on right tarsus).
note 1 : used codes from 2001-2006 were : ACA*, ACC*, ACE*, ACF*, ACG*, ACH*, ACJ*, ACK*, ACL*, ACM*, ACN*, ACP*, ACR*, ACS*, ACT*, ACU*, ACV*, ACX*, ACY*, AEA*, AEC*, AEE*, AEF*, AEG*, AEH*, AEJ*, AEK*, AEL*, AEM*, AEN*, AEP*,
AER*, AES*, AET*, AEU*, AEV*, AEX*, AFA*, AFC*, AFG*, AFH*, AFJ*, AFK*, AFL*, AFM*, AFN*, AFP*, AFR*, AFS*, AFT*, AFU*, AFV*, AFX*, AGA*, AGC*, AGE*, AGF*, AHA*, AHC*, AHH*, AHJ*, AHK*, AHL*, AHM*, AHN*, AHP*, AHR*,
AHS*, AHT*, AHU*, AHX*, AJL*, AJM*, AJN*
note 2 : the "*" in the code means a number : 0,1,2,3,4,5,6,7,8,9,0.
note 3 : birds are ringed as non-fledged chicks in a colony of about 300 breeding birds near the city of Kiel.