Mass Audubon State of the Birds
Find Bird Groups
State of the Birds
Turkey Vulture
|
|
Tracking This Bird In Massachusetts
Climate Vulnerability Score
Least Vulnerable
Mass Audubon Mean likelihood of occurrence (current)
0.51
Mass Audubon Mean likelihood of occurrence (2050)
0.50
Mass Audubon Absolute change in likelihood of occurrence
-0.01
U.S. Forest Service Climate Change Bird Atlas (Hadly Hi emissions scenario)a
16.70
National Audubon Societyb
n/a
a USFS model data for Massachusetts by 2100
b National Audubon Society's Climate Change Atlas was completed on a continental scale.
Mass Audubon indicates least vulnerable to climate change. USFS indicates increase. Results not presented by National Audubon.
Breeding Bird Atlas
Atlas I Blocks
128
Atlas II Blocks
449
Percent of state occupied - Atlas I
13
Percent of state occupied - Atlas II
43
Percent change
309
Breeding Bird Survey
Annual trend 1966-2010
7.1%
P-value
not significant
Number of routes
16
Recent trend 2000-2010
-2.6%
Christmas Bird Count
Trend (1963-2008)
26
Significantly different than zero
yes
Trend (1963-1979)
0
Significantly different than zero
Trend (1979-2008)
25
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
Forest
Wintering
Urban and Suburban