| 1975 |
 |
| Close Up |
| Stylised Owl |
| 1977 | 1977 |
 |
 |
| Eagle Owl | Tengmalm's Owl |
| 1977 | 1977 |
 |
 |
| Eagle Owl | Tengmalm's Owl |
| 1979 |
 |
| Unidentified Owl |
| 1981 | 1997 |
 |
 |
| Eagle Owl | Long Eared Owl |
| 1997 | 1997 |
 |
 |
| Eurasian Pygmy Owl | Ural Owl |
| 1998 | 1998 |
 |
 |
| Little Owl | Barn Owl |
| 1998 | 1998 |
 |
 |
| Tawny Owl | Barn Owl |
| 1999 |
 |
| Stylized Owl |
| 1998 | 2001 |
 |
 |
| Eagle Owl | Little Owl |
| 2001 | 2001 |
 |
 |
| Close Up | |
| Tengmalm's Owl | Unidentified Owls |
| 2001 | 2003 |
 |
 |
| Close Up | Close Up |
| Stylised Owl | Stylised Owl |
| 2003 | 2004 |
 |
 |
| Close Up | Close Up |
| Stylised Owl | Stylised Owl |
| 2006 |
 |
| Stylised Owl |
| 2007 |
 |
| Little Owl |