BirdAnalyst
Species · Wyoming · BBS 2025 Release · 1966–2024

Red-winged Blackbird Population Trend in Wyoming

All statesGeneralists

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 →
129Routes 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 →
56YearsYears 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 19% by 2029 — from 28 in 2024 to a central estimate of 23 (95% range 10–36). A 5-year backtest shows a typical error of ±25.2%, with 100% of held-out values landing inside the 95% band.

-19%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 →
23Projected 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 →
10–3695% 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 →
±25.2%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 19% by 2029 — from 28 in 2024 to a central estimate of 23 (95% range 10–36). A 5-year backtest shows a typical error of ±25.2%, with 100% of held-out values landing inside the 95% band.19682029
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 →
2025231136
2026231036
2027231036
2028231036
2029231036

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 →
Seely24920001990
Harmony24620231980
Seely 216520242001
Wyarno15820241974
Yoder15620241968
Dayton13620241980
Lingle11320241980
Otto11220241970
Big Sandy9920241983
Sussex9720241991
Ethete9020241991
Tensleep8520241995
Meeteetse8420241991
Seedskadee 28320242024
Arvada7220241982
Upton7220241987
Cody6820241983
Midvale6820241974
Rozet6620231991
Gvnt Valley5720241992
Mtn View5620241980
Riverside5420241968
Dwyer5120191992
Basin3920241970
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 2026-05-22.