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Willow Flycatcher
Empidonax traillii

The Willow Flycatcher has increased tremendously in Massachusetts as it has expanded its range northward, readily occupying moist bushy meadows and brushy wetland edges in areas generally at lower elevations than those preferred by its close relataive, the Alder Flycatcher. It has become a fairly widespread breeder in the Commonwealth.
Conservation Status
No Action - Strong Increase

Tracking This Bird In Massachusetts

Climate Vulnerability Score

Likely Vulnerable
Mass Audubon Mean likelihood of occurrence (current)
0.52
Mass Audubon Mean likelihood of occurrence (2050)
0.47
Mass Audubon Absolute change in likelihood of occurrence
-0.05
U.S. Forest Service Climate Change Bird Atlas (Hadly Hi emissions scenario)a
-7.80
National Audubon Societyb
Climate Threatened
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
122
Atlas II Blocks
436
Percent of state occupied - Atlas I
13
Percent of state occupied - Atlas II
42
Percent change
320

Breeding Bird Survey

Annual trend 1966-2010
4.6%
P-value
significant, increasing
Number of routes
20
Recent trend 2000-2010
4.6%

Christmas Bird Count

Trend (1963-2008)
0
Significantly different than zero
Trend (1963-1979)
0
Significantly different than zero
Trend (1979-2008)
0
Significantly different than zero

Habitat Usage

Breeding

Forested Wetland, Shrubland

Wintering

Does not winter in Massachusetts

Climate Suitability Current and 2050