Head to head
Red Deer vs Sika Deer
The red deer and sika deer are close relatives that share parts of the same range in places where the sika deer has been introduced, sometimes interbreeding as a result.
| Red Deer | Sika Deer | |
|---|---|---|
| Scientific name | Cervus elaphus | Cervus nippon |
| Relative size | Large | Smaller |
| Rutting call | Deep, roaring bugle | Eerie, high-pitched whistling |
| Adult spotting | Not spotted | Retained in many populations |
| Native range | Europe and Asia | East Asia |
| Conservation status | Least Concern | Least Concern |
| Population trend | Stable | Decreasing |
| Habitat | Forest, grassland | Forest, grassland |
Red Deer vs Sika Deer: common questions
Can red deer and sika deer interbreed?
Yes, the two species can hybridise in areas where introduced sika deer populations overlap with native red deer, a genetic mixing that conservationists monitor closely due to its potential impact on pure red deer populations.
How can you tell a red deer from a sika deer by sound?
The red deer gives a deep, roaring bugle during the rut, while the sika deer gives an eerie, high-pitched whistling or screaming call, a clear vocal difference between the two closely related species.
Which is bigger, the red deer or the sika deer?
The red deer is considerably bigger, while the sika deer is a noticeably smaller deer that also retains white spots into adulthood in many populations, unlike the unspotted adult red deer.