Survival, nest success and productivity of female common eiders (Somateria mollissima dresseri) on Flag Island, Harspwell, Casco Bay, Maine. Final Report 2003-2008 Principal Investigators: R. Bradford Allen, Maine Department of Inland Fisheries and Wildlife, 650 State Street, Bangor, Maine 04401
[email protected] Daniel G. McAuley, USGS Patuxent Wildlife Research Center, 5769 South Annex A, Orono, Maine 04469-5768
[email protected] Anthony Tur, USFWS, New England Field Office, 70 Commercial Street, Suite 300, Concord, NH, 03224
[email protected] Cooperators: Molly Sperduto (USFWS-NEFO), K. Sarah Fleming, ME-DIFW, Patrick Corr (USGS), Brian Benedict and Linda Welch, Maine Coastal Islands National Wildlife Refuge (USFWS), Stewart Fefer and Bob Houston, Gulf of Maine Program (USFWS), Jane Arbuckle and Chris Fictel (Maine Coast Heritage Trust). This final report was prepared by Brad Allen, Anthony Tur and D. McAuley. K. Sarah Fleming provided significant contributions to some sections. Executive Summary In 2008, we concluded the 6th and final year of what was originally designed as a 5-year study to examine survival, recruitment and recovery rates of nesting common eiders (Somateria mollissima dresseri) on Flag Island, Harpswell, Maine. The total breeding population of common eiders on Flag Island was estimated to be about 500 nesting pairs in 2008, which is at the long term estimate of approximately 500-600 nesting pairs for this island. Both the 2007 and 2008 nesting estimates were, however, a marked improvement from the 2006 estimate when only 200 hens actually nested. This low point coincided with the beginning of significant non-nesting events by hen eiders in east Casco Bay at and leading up to two significant mortality events on the wintering grounds in Massachusetts.