Steller's Eider vs King Eider

Steller's Eider and King Eider are both sea ducks found in northern latitudes, but they can be distinguished by their plumage and bill shape. Steller's Eider has a more compact body and a distinctive white head with a black eye patch, while King Eider males have a striking orange bill and a colorful head pattern. Both species are often seen in mixed flocks during migration.

1. Bill Shape: Look for the orange bill on male King Eiders, which is absent in Steller's Eiders. 2. Head Pattern: Note the white head and black eye patch of male Steller's Eiders. 3. Size: Steller's Eider is smaller and more compact. 4. Habitat: Consider the habitat; Steller's Eiders are more likely in shallow marine waters, while King Eiders have a broader range.

Steller's Eider is generally smaller and more compact than the larger King Eider.

Male Steller's Eider has a white head with a black eye patch and a chestnut breast, while the male King Eider has a colorful head with a greenish nape, blue crown, and an orange bill. Female Steller's Eiders are more uniformly brown compared to the more patterned female King Eiders.

Both species dive for food, but Steller's Eider tends to forage more on marine organisms like crustaceans and mollusks, while King Eider often consumes mussels.

Steller's Eider winters in shallow marine waters and breeds near freshwater tundra ponds, whereas King Eider has a broader wintering range in the Bering Sea and breeds in Arctic tundra regions.