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Species · Wyoming · BBS 2026 Release · 1966–2025

Red-winged Blackbird Population Trend in Wyoming

All statesWetland birds

Red-winged Blackbird in Wyoming has held roughly steady: down 4% on the route-weighted index since 1970.

-4%Since 1970TrendPercent 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 →
131Routes 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 WyomingNotable 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 Wyoming. See the full index history below.

Red-winged Blackbird Population Forecast in Wyoming

If the recent trend holds, Red-winged Blackbird in Wyoming is projected to fall about 16% by 2030 — from 28 in 2025 to a central estimate of 23 (95% range 11–36). A 5-year backtest shows a typical error of ±21.8%, with 100% of held-out values landing inside the 95% band.

-16%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 →
23Projected 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 →
11–3695% 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 →
±21.8%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 Wyoming is projected to fall about 16% by 2030 — from 28 in 2025 to a central estimate of 23 (95% range 11–36). A 5-year backtest shows a typical error of ±21.8%, with 100% of held-out values landing inside the 95% band.19682030
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 →
2026231136
2027231136
2028231136
2029231136
2030231136

Red-winged Blackbird Survey Routes in Wyoming

Routes recording Red-winged Blackbird in Wyoming.
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 →
Wyarno50620251974
Seely24920001990
Yoder19120251968
Seely 214520252001
Basin12120251970
Lingle11320241980
Gvnt Valley10920251992
Harmony10120251980
Meeteetse9020251991
Ethete8320251991
Seedskadee 28320242024
Cody7420251983
Tensleep7320251995
Riverside5920251968
Nowood5820251988
Mtn View5620241980
Otto5520251970
Rozet5220251991
Midvale4820251974
Upton4720251987
Big Sandy4320251983
Dayton3920251980
Lovell3520251989
Sussex3320251991
Clarkelen3219781968

Red-winged Blackbird Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsin

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