| Canada 1961 | Denmark 1965 | Denmark - Nature 1994 | ||
|
 |
 |
||
| MS | MS Perf MS Imperf | MS | ||
| Stylised Owl ? | Little Owl | Snowy Owl |
| Denmark | Denmark | Denmark |
 |
 |
 |
| Denmark 1987 | 19?? | Denmark 1968 | Greenland 1981 |
 |
 |
 |
 |
| Used Version Only | Part Sheet Only | MS | MS |
| Barn Owl | Tawny Owl | Snowy Owl |
| Mexico 2005 | Norway 19?? |
 |
 |
| Spotted Owl | Snowy Owl |
| Netherlands 1950 | South Africa 1967 | Sweden 1993 | Sweden | Switzerland 1961 | USA |
 |
 |
 |
 |
 |
 |
| MS | MS Perf | Used Only | Perf & Imperf Versions | ||
| Stylised Owl | White Faced Owl | Eagle Owl | Stylised Owl | Stylised Owl |
| USA NWF 1991 | USA NWF 1992 | USA NWF 1995 | Zimbabwe 1983 |
 |
 |
 |
 |
| Single Stamp Only | MS | MS | Single version Only |
| MS | |||
| Burrowing Owl | Saw Whet Owl | Snowy Owl | Grass Owl |
We do have other USA NWF items and we will put these on at a later date.