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Species · Oklahoma · BBS 2026 Release · 1966–2025

Red-winged Blackbird Population Trend in Oklahoma

All statesWetland birds

Red-winged Blackbird in Oklahoma has edged up: up 12% on the route-weighted index since 1969.

+12%Since 1969TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
69Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Red-winged Blackbird Trends in OklahomaNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Red-winged Blackbird in Oklahoma. See the full index history below.

Red-winged Blackbird Population Forecast in Oklahoma

If the recent trend holds, Red-winged Blackbird in Oklahoma is projected to stay roughly flat through 2030, near 31 (95% range 13–48). A 5-year backtest shows a typical error of ±12%, with 100% of held-out values landing inside the 95% band.

+3%Change by 2030TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
31Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
13–4895% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±12%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Red-winged Blackbird in Oklahoma is projected to stay roughly flat through 2030, near 31 (95% range 13–48). A 5-year backtest shows a typical error of ±12%, with 100% of held-out values landing inside the 95% band.19672030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
2026311449
2027311349
2028311348
2029311348
2030311348

Red-winged Blackbird Survey Routes in Oklahoma

Routes recording Red-winged Blackbird in Oklahoma.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Hooker51920251992
Hunter31720241992
Wakita9720161967
Douglas9020221967
Cookietown5920061968
Beaver5720181979
Ft Sill East5219941994
Randlett4920251967
Colony4919951995
Hardesty4120241970
Sickles3920211992
Cashion3820241992
Keyes3720241992
Cooperton3620251992
Clear Lake3220251992
Felt3120241971
Peoria3020231967
Loco2719851967
Rosston2520181967
Elgin2520161994
Ft Sill West2519941994
Jet2420241992
Welch2220251967
Matoy2020251992
Barnsdall1919771967

Red-winged Blackbird Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.