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Mass Audubon State of the Birds

Find Bird Groups

Common Eider
Somateria mollissima

Islands in Buzzards' Bay, Boston Harbor, and off Essex County host most of the nesting areas for the Common Eider in the state. While its breeding range in Massachusetts is very restricted, it has expanded in recent years and it is an abundant species in the winter.
Conservation Status
No Action - Strong Increase

Tracking This Bird In Massachusetts

Climate Vulnerability Score

No data
Mass Audubon Mean likelihood of occurrence (current)
Mass Audubon Mean likelihood of occurrence (2050)
Mass Audubon Absolute change in likelihood of occurrence
no data
U.S. Forest Service Climate Change Bird Atlas (Hadly Hi emissions scenario)a
No data available
National Audubon Societyb
No data available
a USFS model data for Massachusetts by 2100
b National Audubon Society's Climate Change Atlas was completed on a continental scale.

Breeding Bird Atlas

Atlas I Blocks
3
Atlas II Blocks
26
Percent of state occupied - Atlas I
0
Percent of state occupied - Atlas II
3
Percent change
1050

Breeding Bird Survey

Annual trend 1966-2010
P-value
Number of routes
Recent trend 2000-2010

Christmas Bird Count

Trend (1963-2008)
4.6
Significantly different than zero
yes
Trend (1963-1979)
15.8
Significantly different than zero
yes
Trend (1979-2008)
3.5
Significantly different than zero
yes
Christmas Bird Count Sightings By Year
Data reflects sightings per person per hour in order to account for varying numbers of yearly volunteers.

Habitat Usage

Breeding

Coastal

Wintering

Coastal