Steller's Eider
Birds Active during the day

Steller's Eider

Polysticta stelleri

The smallest and swiftest of the sea ducks, the Steller's Eider is an Arctic gem known for its stunning cinnamon plumage and synchronized diving. This vulnerable traveler bridges the gap between the rugged Siberian coast and the icy waters of the Bering Sea.

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Quick Identification

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Size

Length 43–47 cm (17–18.5 in); wingspan 68–77 cm (27–30 in); weight 500–1000 g (1.1–2.2 lbs)

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Colors

Males: White head with green/black spots, cinnamon breast, black back. Females: Dark mottled brown with blue-white wing speculum.

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Key Features

  • Smallest and fastest-flying eider species
  • Male has distinctive tawny-buff underparts and black throat collar
  • Square-ish head shape compared to other ducks
  • Blue speculum with white borders on both sexes
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When You’ll See Them

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Activity pattern Active during the day
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Peak hours 7 AM - 5 PM
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Season October-March (wintering coasts), June-July (breeding tundra)
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Diet Benthic invertebrates including mollusks, crustaceans, and marine worms; switches to aquatic insect larvae and plant matter during the summer breeding season.
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Habitat Coastal Arctic tundra for breeding; shallow, ice-free marine waters, lagoons, and rocky shorelines for wintering.

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Where Does the Steller's Eider Live?

The Steller's Eider is a true specialist of the high north, originating from the Arctic coastlines of the Palearctic and Nearctic. Its core range is concentrated along the northern coasts of Russia (Siberia) and Alaska, specifically within the Bering Sea region. During the winter, significant populations migrate to the ice-free waters of the Aleutian Islands and the Baltic Sea, where they can be found hugging the shorelines of countries like Norway and Sweden.

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7 Countries
1.2M km² Range
Vulnerable Conservation
Russia US United States NO Norway Finland SE Sweden Lithuania Estonia
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iNaturalist / Verified observation data
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Behavior

Steller's Eiders are highly social sea ducks known for their remarkable synchronized behavior. When foraging in large wintering flocks, they often dive and resurface in unison, creating a rhythmic pulsing effect on the water's surface. They are incredibly fast flyers, often staying low over the water in tight, aerodynamic formations that differentiate them from the more lumbering flight of larger eider species.

During the breeding season, they transition from marine environments to freshwater tundra pools. While they are generally wary of humans, they can be observed at closer range in specific wintering harbors, such as those in Alaska or Scandinavia. Their social structure is complex, with pair bonds usually forming on the wintering grounds before the long migration back to Arctic nesting sites.

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Camera Tips

Capturing the Steller's Eider on camera requires a specialized approach due to their coastal and Arctic habitats. For those living along the Alaskan or Baltic coastlines, position your camera on a sturdy tripod or a low-profile ground mount near the high-tide line of sheltered lagoons or rocky points. Because these birds are smaller than other eiders, a low angle—ideally just 12 to 18 inches off the ground—will provide a much more intimate and impressive perspective of their striking plumage.

Since these birds are often found in freezing environments, battery life is your greatest challenge. Use external battery packs or high-quality lithium batteries, as standard alkalines will fail rapidly in the sub-zero temperatures typical of eider habitats. If you are setting up near salt water, ensure your camera housing is weather-sealed and wiped down regularly to prevent salt spray from clouding the lens or corroding the seals.

Timing is everything with this species. Set your camera to burst mode or high-speed video to capture their synchronized diving behavior, which usually peaks during the mid-morning feeding sessions. They are most active during daylight hours, so there is little need for infrared flash unless you are tracking nocturnal predators in the area. Focus on areas where the water remains ice-free and shallow, as these are their primary foraging 'hotspots' during the lean winter months.

Frequently Asked Questions

Steller's Eider are strictly diurnal, meaning they are most active during daylight hours. They spend the majority of their day foraging for food in shallow coastal waters, with peak activity typically occurring in the mid-morning and mid-afternoon.
Unlike songbirds, Steller's Eiders cannot be attracted with bird feeders. They are marine specialists. If you live on an Arctic or sub-Arctic coastline, you can encourage them to visit your waterfront by maintaining natural, undisturbed shorelines and protecting local eelgrass beds and invertebrate populations from pollution.
Their diet consists primarily of marine invertebrates like mollusks, small crabs, and sea snails. When they move inland to the tundra to breed, they switch to eating aquatic insects and larvae found in freshwater ponds.
No, they are very rare in suburban settings. They are only found in remote coastal communities or northern harbor towns within their specific Arctic and sub-Arctic range.
Steller's Eiders are significantly smaller and more slender. Males have a white head with a small green tuft and a tawny breast, whereas King Eider males have a distinctive orange 'shield' on their bill and a blue-grey crown. Steller's also fly much faster and in tighter groups.

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