Tern, Common
Sterna hirundo
Ringed: 33445 | Retrapped: 993 | Recovered: 218
SAFRING
Annual ringing activity
Biometrics
Distribution of ringing records
 |
Ringing records |  |
Retraps and resightings |  |
Ring recovery records |
| ABAP distribution Full protocol Reporting Rate | 0% | 100% | |||
| ABAP distribution records other | Adhoc protocol and pentads with less than 4 cards | ||||
Top 10 ringers
| 1453 | Mr H Defourny | 13504 |
| 572 | Mr M Boorman | 9542 |
| 280 | Mr A Tree | 5865 |
| 269 | MR G Scholtz | 726 |
| 576 | Dr S Dantu | 545 |
| 316 | Mr JC Sinclair | 412 |
| 573 | Mr D Heinrich | 326 |
| 215 | Mr G Underhill | 307 |
| 1240 | Ursula Bryson | 272 |
| 218 | Mr M Waltner | 227 |
Top 10 retrappers
| 1453 | Mr H Defourny | 633 |
| 0 | Member of the public | 202 |
| 986 | Arnhem Scheme, Netherlands | 73 |
| 988 | Bruxelles Scheme, Belgium | 63 |
| 572 | Mr M Boorman | 54 |
| 989 | Hiddensee Scheme, Germany | 46 |
| 280 | Mr A Tree | 41 |
| 961 | British Trust for Ornithology (BTO) | 30 |
| 973 | Gdansk/Varsovia Scheme, Poland | 24 |
| 965 | Helsinki Museum Scheme, Finland | 16 |
10 Latest ringing records
| SAFRING | 4H98472 | 2025-04-02 | 1552N1631W |
| SAFRING | 4H98471 | 2025-04-02 | 1552N1631W |
| SAFRING | 4H98470 | 2025-04-02 | 1552N1631W |
| SAFRING | 4H98469 | 2025-04-02 | 1552N1631W |
| SAFRING | 4H98468 | 2025-04-02 | 1552N1631W |
| SAFRING | 4H98467 | 2025-04-02 | 1552N1631W |
| SAFRING | 4H98466 | 2025-04-02 | 1552N1631W |
| SAFRING | 4H98465 | 2025-04-02 | 1552N1631W |
| SAFRING | 4H98464 | 2025-04-02 | 1552N1631W |
| SAFRING | 4H98463 | 2025-04-02 | 1552N1631W |
10 Latest retraps/recoveries
| SAFRING | 4H84932 | 2023-04-04 | 2026-07-15 | 4 | 3y 3m 28d |
| SAFRING | 4H58731 | 2011-03-09 | 2026-06-29 | 4 | 15y 3m 11d |
| SAFRING | CV83619 | 2021-04-10 | 2026-06-01 | X | 5y 1m 18d |
| SAFRING | 4H92200 | 2024-04-02 | 2026-04-14 | 2 | 2y 0m 22d |
| SAFRING | 4H88384 | 2024-04-05 | 2026-01-25 | X | 1y 9m 0d |
| SAFRING | 4H91875 | 2024-04-09 | 2025-10-04 | X | 1y 5m 3d |
| SAFRING | 4H16740 | 2000-09-02 | 2025-09-15 | X | 25y 0m 24d |
| SAFRING | 4H92769 | 2024-04-04 | 2025-07-04 | 2 | 1y 3m 6d |
| SAFRING | 4H84409 | 2023-03-28 | 2025-07-01 | 4 | 2y 3m 16d |
| SAFRING | 4H92355 | 2024-04-03 | 2025-07-01 | 4 | 1y 2m 4d |
10 Greatest longevity retraps
Note: recovery (X) records are not included in this list as we are not always sure of the actual date of death.
| SAFRING | BB76957 | 1988-01-11 | 2010-06-22 | 2 | 22y 5m 8d |
| SAFRING | 491397 | 1999-02-10 | 2017-09-08 | 4 | 18y 6m 5d |
| SAFRING | 4H33454 | 2006-10-11 | 2025-04-01 | 2 | 18y 5m 27d |
| SAFRING | 4H37220 | 2006-08-26 | 2024-04-08 | 2 | 17y 7m 15d |
| SAFRING | 4H11182 | 1999-02-17 | 2016-08-06 | 2 | 17y 5m 20d |
| SAFRING | 4H36588 | 2005-12-03 | 2023-05-18 | 4 | 17y 5m 15d |
| SAFRING | BH49263 | 2007-01-26 | 2024-04-04 | 2 | 17y 2m 8d |
| SAFRING | 4H02897 | 2001-10-15 | 2018-08-22 | 4 | 16y 10m 5d |
| SAFRING | 4H27613 | 2003-11-26 | 2020-09-02 | 2 | 16y 9m 5d |
| SAFRING | 4H36588 | 2005-12-03 | 2022-06-19 | 4 | 16y 6m 12d |
Long distance records
| Scheme | Ring # | Duration | Distance (Km) |
|---|---|---|---|
| SAFRING | BB67085 | 6y 5m 25d | 11110 |
| SAFRING | 247350 | 1y 6m 26d | 11071 |
| SAFRING | 4H52368 | 7y 2m 3d | 11018 |
| SAFRING | 256102 | 3y 9m 17d | 10995 |
| SAFRING | 247680 | 11y 6m 6d | 10953 |
| SAFRING | 255449 | 1y 9m 13d | 10901 |
| SAFRING | 241311 | 5y 8m 12d | 10837 |
| SAFRING | BH62106 | 12y 2m 13d | 10827 |
| SAFRING | 255416 | 8y 6m 0d | 10816 |
| SAFRING | 241015 | 9y 8m 2d | 10813 |