Federal government biologists say they will expand their monitoring of common eider ducks in Canada's North, as concerns escalate over avian cholera in northern bird colonies.

The common eider is a sea duck that nests in colonies on islands along the North American coast from Maine to Labrador, and in the estuary and Gulf of St. Lawrence in Quebec.

The birds that dump most frequently are the oystercatcher and the common eider duck. 'Both oystercatchers and eider ducks dump their eggs in gull nests, possibly because gulls are the most common ...

Harvested from the nest of eider ducks found wild in Iceland, collecting a kilo of this material isn't easy, and only 4 tons are produced each year.

A type of duck known as a common eider swims near a sensor, perhaps waiting for a worm, which is used as a reward for pecking the sensor after hearing a ping.

THIS is how eider ducks get their lunch. The common eider (Somateria mollissima) flocks to the Norwegian coast in winter to surf the waves and feed in the protected bays and fjords. Pål Hermansen ...