Rock Ptarmigan
| Recorded | 2008-05-24 |
| Location | Soerenberg, CH |
| Copyright | Beat Rüegger |
| Recorded | 2010-07-12 |
| Location | Sariselkä, Fin |
| Copyright | Beat Rüegger |
| Recorded | 2003-03-01 |
| Location | Niederhorn, CH |
| Copyright | Adrian Wullschleger |
| Family | Grouse |
| References | en.wikipedia.org |
1 | 9