Species · Oklahoma · BBS 2025 Release · 1966–2024
American Bittern Population Trend in Oklahoma
American Bittern in Oklahoma has fallen sharply: down 72% on the route-weighted index since 1974.
-72%Since 1974
7Routes In State
13Years
Notable American Bittern Trends in Oklahoma
long arc declinecomputed index
American Bittern has fallen sharply in Oklahoma: down 71% on the route-weighted index since 1974.
American Bittern Survey Routes in Oklahoma
American Bittern Population Trend in Other States
alaskacaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaslouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-dakotaohiooregonpennsylvaniasouth-carolinasouth-dakotatexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.