| Population size in Switzerland (Pairs): 0-1 | Red list 2001:
Vulnerable VU |
Migration behaviour:
wintering birds |
| Body size (cm):
46 |
Body weight (g):
600-1150 |
Clutch size:
6-15 |
| Nest site:
tree cavity |
Incubation (days):
30 |
Nestling stage (days):
57-66 |
| Food:
insects |
Group:
ducks, swans and geese |
Habitat:
lakes, streams and rivers |
