State of the Birds

Black-and-white Warbler
Mniotilta varia

Foraging much like a nuthatch, the Black-and-white Warbler can be found breeding in forests of almost any age and size. It is fairly common as a migrant, and very widespread as a breeder in Massachusetts. The Black-and-white Warbler is becoming significantly less abundant as a nester in the state than it once was-- perhaps due to increases in mammal predation of its ground nests.
Conservation Status
Continued Action/Monitoring Needed

Tracking This Bird In Massachusetts

Climate Vulnerability Score
Highly Vulnerable
Mass Audubon Mean likelihood of occurrence (current)
0.55
Mass Audubon Mean likelihood of occurrence (2050)
0.38
Mass Audubon Absolute change in likelihood of occurrence
-0.17
U.S. Forest Service Climate Change Bird Atlas (Hadly Hi emissions scenario)a
-12.10
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
676
Atlas II Blocks
710
Percent of state occupied - Atlas I
70
Percent of state occupied - Atlas II
68
Percent change
92
Breeding Bird Survey
Annual trend 1966-2010
-2.3%
P-value
significant, declining
Number of routes
27
Recent trend 2000-2010
-1.6%
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
Forest
Wintering
Does not winter in Massachusetts

Additional Information

Climate Suitability Current and 2050