| 2008 | 2012 | 2013 | 2013 |
 |
 |
 |
 |
| SG 2265/70 | SG 2855 | SG 2943 | SG |
| Scott 932 | Scott 1036f | Scott 1043i | Scott |
| Sheet | Sheet | SG2935/44 | Sheet |
| Barn Owl, Bared Owl, Burrowing Owl, Snowy Owl, Great Horned Owl & Spotted Owl | Little Owl | Burrowing Owl | Giant Scops Owl |
