Record 30 Polar-Bear Days on Kongsfjorden’s Eider Islands in One Month
Researchers recorded a record 30 polar-bear days on Kongsfjorden’s eider islands from 4 June to 4 July 2026.…
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News about Common Eider
Research, conservation and important developments connected to this species.
Danish Common Eider Sex-Ratio Survey Recorded 63.3% Males, Down From 69.3% in 2024
A Danish survey analysed 22,090 Common Eiders at 58 coastal locations in March 2026. Males made up 63.3%,…
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Kongsfjorden Eider Breeding Population Has Remained Below 3,000 Pairs in Recent Years
Norwegian Polar Institute monitoring updated in May 2026 shows that the common eider breeding population in Kongsfjorden has…
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Wintering Male Northern Common Eiders Fell 29% Between 2018 and 2023
Canada’s 2025 status report, released in 2026, estimated 121,000 wintering adult male northern common eiders in 2023—29% fewer…
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A 1,200-Year Record Shows an Unprecedented Modern Decline at One Arctic Eider Colony
Peat and lake sediments from a northern common eider colony in Digges Sound, northeastern Hudson Bay, indicate that…
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