Tern, Greater Crested
Thalasseus bergii
Ringed: 21951 | Retrapped: 1549 | Recovered: 558
AFRING
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
| 856 | Dr J Cooper | 9560 |
| 870 | Dept Environmental Affairs | 7118 |
| 13779 | Mr D Gaglio | 1997 |
| 1213 | J le Roux | 480 |
| 572 | Mr M Boorman | 479 |
| 526 | Possession Island | 473 |
| 222 | 381 | |
| 280 | Mr A Tree | 362 |
| 516 | Mr TH Hall | 268 |
| 576 | Dr S Dantu | 160 |
Top 10 retrappers
| 1213 | J le Roux | 1078 |
| 0 | Member of the public | 348 |
| 32 | Dr HD Oschadleus | 150 |
| 572 | Mr M Boorman | 144 |
| 280 | Mr A Tree | 131 |
| 222 | 36 | |
| 1091 | Dr P Whittington | 17 |
| 13779 | Mr D Gaglio | 16 |
| 320 | Prof SE Piper | 7 |
| 526 | Possession Island | 6 |
10 Latest ringing records
| SAFRING | 5H06049 | 2025-05-18 | 3405S1829E |
| SAFRING | 5H00722 | 2025-01-08 | 3354S1825E |
| SAFRING | 5H61801 | 2024-03-02 | 3401S2542E |
| SAFRING | E59878 | 2024-02-09 | 2753S3221E |
| SAFRING | 5H74956 | 2024-01-25 | 3348S1822E |
| SAFRING | 5H74951 | 2023-12-29 | 3422S1853E |
| SAFRING | 5H72349 | 2023-10-26 | 3348S1822E |
| SAFRING | 5H67019 | 2023-10-04 | 3404S2322E |
| SAFRING | 5H69436 | 2022-03-18 | 3350S1829E |
| SAFRING | 5H70900 | 2022-03-09 | 3348S1822E |
10 Latest retraps/recoveries
| SAFRING | 5H70877 | 2021-07-31 | 2024-10-08 | X | 3y 2m 25d |
| SAFRING | 5H74956 | 2024-01-25 | 2024-02-12 | 2 | 0y 0m 18d |
| SAFRING | 5H31505 | 2015-04-18 | 2023-07-21 | 4 | 8y 3m 16d |
| SAFRING | 5H40803 | 2016-04-16 | 2023-04-03 | X | 6y 11m 23d |
| SAFRING | 5H31567 | 2015-04-19 | 2023-03-10 | 4 | 7y 10m 2d |
| SAFRING | 5H53906 | 2015-04-18 | 2023-02-09 | 4 | 7y 9m 4d |
| SAFRING | 5H29566 | 2013-04-10 | 2023-02-05 | 4 | 9y 9m 18d |
| SAFRING | 5H31085 | 2015-04-19 | 2022-10-25 | 4 | 7y 6m 16d |
| SAFRING | 5H13540 | 2014-04-20 | 2022-09-28 | 4 | 8y 5m 23d |
| SAFRING | 5H13044 | 2014-04-19 | 2022-09-23 | 4 | 8y 5m 19d |
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 | 573924 | 1982-04-17 | 2011-05-02 | 2 | 29y 0m 17d |
| SAFRING | 566615 | 1977-04-30 | 2003-11-19 | 2 | 26y 6m 9d |
| SAFRING | 527256 | 1983-04-09 | 2009-10-05 | 2 | 26y 5m 16d |
| SAFRING | 589233 | 1994-04-07 | 2017-12-15 | 2 | 23y 8m 13d |
| SAFRING | 569047 | 1979-04-16 | 2002-11-03 | 2 | 23y 6m 22d |
| SAFRING | 572303 | 1982-04-17 | 2003-11-18 | 2 | 21y 7m 25d |
| SAFRING | 527542 | 1983-04-09 | 2003-11-19 | 2 | 20y 7m 29d |
| SAFRING | 526454 | 1983-04-08 | 2003-11-18 | 2 | 20y 7m 29d |
| SAFRING | 527762 | 1983-04-09 | 2003-11-18 | 2 | 20y 7m 28d |
| SAFRING | 529967 | 1985-04-20 | 2005-08-01 | 2 | 20y 3m 28d |
Long distance records
| Scheme | Ring # | Duration | Distance (Km) |
|---|---|---|---|
| FOREIGN | 2390576 | 16y 7m 13d | 10796 |
| FOREIGN | NA01100 | 16y 0m 9d | 8516 |
| SAFRING | 567080 | 1y 2m 28d | 1563 |
| SAFRING | 63502368 | 0y 2m 19d | 1538 |
| SAFRING | 5H08484 | 1y 3m 7d | 1503 |
| SAFRING | 5H13543 | 0y 2m 6d | 1491 |
| SAFRING | 5H15168 | 0y 5m 4d | 1490 |
| SAFRING | 568959 | 6y 6m 2d | 1482 |
| SAFRING | 5H12673 | 0y 4m 11d | 1478 |
| SAFRING | 5H12690 | 1y 4m 7d | 1478 |