| 1978 | 1978 | 1988 |
 |
 |
 |
| Colour Shift | Perforation Shift | Colour Shift |
| SG 1731/4 | SG 1731/4 | SG 2355 |
| Scott 1760/3 | Scott 1760/3 | Scott 2285 |
| Great Grey Owl, Saw Whet Owl, Barred Owl & Great Horned Owl | Great Grey Owl, Saw Whet Owl, Barred Owl & Great Horned Owl | Saw Whet Owl |
| 1988 | ||
|
||
| Saw Whet Owl | ||
| Both booklets above are the first version. The second version is an error with the vertical perforations misplaced giving the impression that the stamps are partly imperforated |
