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Species · Oklahoma · BBS 2025 Release · 1966–2024

Red-winged Blackbird Population Trend in Oklahoma

All statesGeneralists

Red-winged Blackbird in Oklahoma has edged up: up 13% on the route-weighted index since 1969.

+13%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 →
57YearsYears 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 fall about 14% by 2029 — from 36 in 2024 to a central estimate of 31 (95% range 13–49). A 5-year backtest shows a typical error of ±14.5%, with 100% of held-out values landing inside the 95% band.

-14%Change by 2029TrendPercent 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 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
13–4995% 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 →
±14.5%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 fall about 14% by 2029 — from 36 in 2024 to a central estimate of 31 (95% range 13–49). A 5-year backtest shows a typical error of ±14.5%, with 100% of held-out values landing inside the 95% band.19672029
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 →
2025311449
2026311449
2027311349
2028311349
2029311349

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 →
Hooker33720241992
Hunter31720241992
Wakita9720161967
Douglas9020221967
Cookietown5920061968
Beaver5720181979
Ft Sill East5219941994
Colony4919951995
Cooperton4320241992
Hardesty4120241970
Sickles3920211992
Cashion3820241992
Welch3720241967
Keyes3720241992
Felt3120241971
Peoria3020231967
Loco2719851967
Rosston2520181967
Elgin2520161994
Hollis2520241993
Ft Sill West2519941994
Jet2420241992
Phillips2220081968
Lookout2120231967
Randlett2020241967

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 2026-05-22.