Conservation
Bird Guild Population Trends
Ecological groupings tell the conservation story. Grassland birds and aerial insectivores are the steepest-declining guilds across the surveyGuild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology →.
-89%
Game birds
23 species · since 1968
-67%
Generalists
26 species · since 1968
-58%
Wetland birds
84 species · since 1968
-52%
Grassland birds
29 species · since 1968
-42%
Aerial insectivores
50 species · since 1968
-37%
Forest birds
205 species · since 1968
-33%
Shorebirds
35 species · since 1968
+41%
Arid-land birds
24 species · since 1969
+64%
Birds of prey
47 species · since 1968
+84%
Seabirds
7 species · since 1968
+134%
Waterfowl
38 species · since 1968