Great Horned Owl Bubo virginianus
| Order & Family | Description | Clutch Size | Egg Size |
| Strigiformes
Strigidae |
Subelliptical to short subelliptical or elliptical. Smooth and glossy, slightly granular. Colour is white, unmarked. | 2-3 eggs | 56 x 47 mm |
Breeding Status
| Boreal Forest |
 |
Confirmed | Canadian Shield |
 |
Confirmed | |
| Rocky Mountain |
 |
Confirmed | Parkland |
 |
Confirmed | |
| Foothills |
 |
Confirmed | Grassland |
 |
Confirmed |
