| canada | alberta | strix occidentalis | species | 0 | 1 |
| canada | alberta | strix occidentalis caurina | subspecies | 0 | 1 |
| united states | california | strix occidentalis | species | 0 | 9 |
| united states | california | strix occidentalis caurina | subspecies | 3 | 4 |
| united states | california | strix occidentalis occidentalis | subspecies | 0 | 6 |
| united states | nevada | strix occidentalis | species | 0 | 4 |
| united states | nevada | strix occidentalis occidentalis | subspecies | 0 | 3 |
| united states | new mexico | strix occidentalis | species | 1 | 0 |
| united states | oregon | strix occidentalis | species | 3 | 3 |
| united states | oregon | strix occidentalis caurina | subspecies | 0 | 3 |
| united states | texas | strix occidentalis | species | 0 | 1 |
| united states | texas | strix occidentalis caurina | subspecies | 0 | 1 |
| united states | washington | strix occidentalis | species | 3 | 1 |
| united states | washington | strix occidentalis caurina | subspecies | 0 | 1 |