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You should find 3 or 4 pieces of data on pigeon's ring (depending on country). Every pigeon has unique combination of ring data.

1. Country code: usually 2 or more characters describing country of origin. Examples: SK, CZ, HUNG, AUSTRIA, NL, BELG...
2. Year: 2 or 4 digits describing year of pigeon's hatching. Examples: 02, 10, 14 or 2002, 2010, 2014...
3. Organisation (optional): used only by some federations (Slovak, Czech, Hungarian, German...). Code of organisation usually starts by zero. Please do not mix it with ring number. Examples: 0107, 0400, 03779... Sometimes it can be special string like DERBY, OLIMPIA, VR98, M-55, PZHGP
4. Ring number: numeric value, unique for ring series. Examples: 12, 397, 12556...

Please always use this specific order while reporting a lost pigeon. You can separate the data by white space, dash, comma, colon or semicolon...

Examples:

• SK 12 02302 841
• CZ 08 0245 652
• DV 12 03548 3214
• BELG 11 1254788
• PL 11 PZHGP 45878
• PL 14 0235 6874
• HU 11 D 45878
• HU 14 06 6548