Duck, Knob-billed
Sarkidiornis melanotos
Ringed: 552 | Retrapped: 4 | Recovered: 83
AFRING
Annual ringing activity
Biometrics
Distribution of ringing records
 |
Ringing records |  |
Retraps and resightings |  |
Ring recovery records |
| ABAP distribution | 0% | 100% | |||
Top 10 ringers
| 641 | Mr C Crawford | 164 |
| 623 | Mr J Meyer | 152 |
| 650 | Dr MJ Jarvis | 77 |
| 632 | Mr I Stephens | 30 |
| 604 | Mr K Cackett | 23 |
| 636 | Mr Harland | 19 |
| 1315 | Mr N Chiweshe | 15 |
| 454 | Mr JT Marx | 15 |
| 638 | Mr W Rutledge | 13 |
| 730 | Mr S Petrie | 9 |
Top 10 retrappers
| 0 | Member of the public | 3 |
| 1417 | Dr M Ndlovu | 1 |
10 Latest ringing records
| SAFRING | K37779 | 2025-07-18 | 1803S3053E |
| SAFRING | K37772 | 2025-07-18 | 1803S3053E |
| SAFRING | 892342 | 2025-05-31 | 1436S2239E |
| SAFRING | 872363 | 2017-06-24 | 1802S3054E |
| SAFRING | 873938 | 2017-06-23 | 1802S3054E |
| SAFRING | 873936 | 2017-06-23 | 1802S3054E |
| SAFRING | 873937 | 2017-06-23 | 1802S3054E |
| SAFRING | 873931 | 2017-06-22 | 1802S3054E |
| SAFRING | 873932 | 2017-06-22 | 1802S3054E |
| SAFRING | 873934 | 2017-06-22 | 1802S3054E |
10 Latest retraps/recoveries
| SAFRING | 9A54401 | 2007-07-12 | 2007-07-14 | 2 | 0y 0m 2d |
| SAFRING | 65700866 | 1973-03-05 | 1994-09-15 | X | 21y 6m 4d |
| SAFRING | 916617 | 1978-12-03 | 1983-12-08 | X | 5y 0m 1d |
| SAFRING | 916616 | 1978-12-03 | 1982-11-10 | X | 3y 11m 28d |
| SAFRING | 916608 | 1978-11-27 | 1982-10-26 | X | 3y 10m 19d |
| SAFRING | 830033 | 1982-02-09 | 1982-03-19 | X | 0y 1m 8d |
| SAFRING | 830018 | 1982-01-29 | 1982-03-06 | X | 0y 1m 6d |
| SAFRING | 916629 | 1979-02-26 | 1982-02-20 | X | 2y 11m 10d |
| SAFRING | 916626 | 1979-02-18 | 1980-12-26 | X | 1y 10m 17d |
| SAFRING | 810436 | 1978-05-03 | 1980-02-17 | X | 1y 9m 25d |
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 | 52600366 | 1968-01-17 | 1969-02-15 | 2 | 1y 0m 5d |
| SAFRING | 52600370 | 1968-02-01 | 1969-02-15 | 2 | 1y 0m 20d |
| SAFRING | 59702945 | 1968-02-24 | 1969-02-16 | 2 | 0y 11m 28d |
| SAFRING | 9A54401 | 2007-07-12 | 2007-07-14 | 2 | 0y 0m 2d |
Long distance records
| Scheme | Ring # | Duration | Distance (Km) |
|---|---|---|---|
| SAFRING | 65700544 | 0y 7m 27d | 3881 |
| SAFRING | 65700630 | 4y 5m 11d | 3828 |
| SAFRING | 65700866 | 21y 6m 4d | 3683 |
| SAFRING | 65700633 | 5y 9m 29d | 3650 |
| SAFRING | 65700716 | 0y 10m 7d | 3631 |
| SAFRING | 54612325 | 1y 3m 3d | 3524 |
| SAFRING | 819151 | 0y 9m 16d | 2205 |
| SAFRING | 54612359 | 4y 6m 10d | 1776 |
| SAFRING | 58702564 | 4y 2m 7d | 1169 |
| SAFRING | 65700670 | 1y 8m 24d | 1043 |