| 1978 | 1989 | 1990 | 1990 | 1996 |
 |
 |
 |
 |
 |
| SG 400 | SG 874 | SG 1012 | SG 1058 | SG 2387 |
| Scott 381 | Scott 832 | Scott 970a | Scott 1011 | Scott 1836 |
| MS | Rosetta Stone | |||
| Verreaux's Eagle Owl | Little Owl | White Faced Scops Owl | Stylised Owl | White Faced Scops Owl |
| 1991 | ||
|
||
| SG 1099 & 1100 | ||
| Scott 1059c & d | ||
| MS | ||
| Stylised Owl |
| 1991 |
 |
| SG 1106b |
| Scott 1060 |
| Stylised Owl |
| 1993 | 2000 |
 |
 |
| Close Up | |
| SG 1508a | SG 3671b |
| Scott 1377 | Scott 2310 |
| Tawny Owl | Barn Owl |
| 2000 | ||||
|
||||
|
||||
|
||||
| MS | ||||
| Unidentified Owls |
| 2001 |
 |
| Close Up |
| SG MS3905f |
| Scott 2377 |
| Barn Owl |
| 2001 | 2011 | 2013 | 2014 | 2014 |
 |
 |
 |
 |
 |
| Close Up | ||||
| SG 4164 | SG 5454f | SG | SG | SG |
| Scott 2677b | Scott 3397f | Scott | Scott | Scott |
| MS | SG MS5454 | Sheet | Sheet | Sheet |
| Barn Owl | Spotted Eagle Owl | Little Owl | Pearl Spotted Owlet | African Scops Owl |
