Most North American bird species are in decline
Median annual % change in abundance 2007-2021, in 27 sq km areas
10
67% of
species are
in decline
Median annual
% change
5
0
−5
−10
Each bar represents
one of 495 species studied
−15
10
67% of species
are in decline
Median annual
% change
5
0
−5
−10
Each bar represents
one of 495 species studied
−15
10
67% of species
are in decline
Median annual
% change
5
0
−5
−10
Each bar represents
one of 495 species studied
−15
10
67% of species
are in decline
Median annual
% change
5
0
−5
−10
Each bar represents
one of 495 species studied
−15
10
67% of
species are
in decline
Median annual
% change
5
0
−5
−10
Each bar represents
one of 495 species studied
−15
10
67% of species
are in decline
Median annual
% change
5
0
−5
−10
Each bar represents
one of 495 species studied
−15
10
67% of species
are in decline
Median annual
% change
5
0
−5
−10
Each bar represents
one of 495 species studied
−15
10
67% of species
are in decline
Median annual
% change
5
0
−5
−10
Each bar represents
one of 495 species studied
−15