| Gathering of common eider down during the nesting period is a unique use in the St. Lawrence estuary. |
| For simplicity's sake, only eider migration is described in the following guidelines. |
| In one case, a female Steller's eider was killed by a snowy owl, after which her ducklings were adopted into a nearby brood. |
| Predation is known to be an important source of mortality in eider ducklings, particularly during the first three weeks after hatch. |
| Do not let it run free on coastal islands because terns, eider ducks, puffins, and storm petrels are ground nesters. |
| Walk along the edge opposite the stacks, looking for shags, tysties, eider ducks, grey seals. |
