Species · Idaho · BBS 2025 Release · 1966–2024
American Bittern Population Trend in Idaho
American Bittern in Idaho has fallen sharply: down 69% on the route-weighted index since 1988.
-69%Since 1988
5Routes In State
16Years
Notable American Bittern Trends in Idaho
long arc declinecomputed index
American Bittern has fallen sharply in Idaho: down 69% on the route-weighted index since 1988.
American Bittern Survey Routes in Idaho
American Bittern Population Trend in Other States
alaskacaliforniacoloradoconnecticutdelawarefloridageorgiaillinoisindianaiowakansaslouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.