Survival, Productivity, and Recruitment of Pacific Common Eiders Breeding at Kigigak Island, Yukon Delta National Wildlife Refuge, Alaska
![](https://seaduckjv.org/wp-content/uploads/2023/06/COEI_hen_on_nest_TimBowman.jpg)
Project Number: 59
Year Funded: 2007
Lead Institution(s): US Fish and Wildlife Service
Project Lead: Bryce Lake
Collaborator(s):
Location: Alaska
Focal Species: Common Eider (Somateria mollissima)
Project Description: Aerial surveys have documented a >90% population reduction over the past 40 years in the Yukon-Kuskokwim Delta population of Pacific common eiders (Stehn et al. 1993, Hodges et al. 1996) and the U.S. Fish and Wildlife Service (Region 7) has identified Pacific common eiders as a “focal species” (USFWS 2006). This study builds upon a previously established sample of marked adult females (n = 190) and ducklings (n = 250) at one site (Kigigak Island) in an effort to characterize annual variation in survival and productivity.
Project Reports: https://seaduckjv.org/pdf/studies/pr59.pdf
![Survival, Productivity, and Recruitment of Pacific Common Eiders Breeding at Kigigak Island, Yukon Delta National Wildlife Refuge, Alaska Survival, Productivity, and Recruitment of Pacific Common Eiders Breeding at Kigigak Island, Yukon Delta National Wildlife Refuge, Alaska](https://seaduckjv.org/wp-content/uploads/2023/06/COEI_hen_on_nest_TimBowman.jpg)