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Species · Wyoming · BBS 2025 Release · 1966–2024

Bullock's Oriole Population Trend in Wyoming

All statesGeneralists

Bullock's Oriole in Wyoming has increased: up 35% on the route-weighted index since 1970.

+35%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 →
79Routes 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 Bullock's Oriole 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 Bullock's Oriole in Wyoming. See the full index history below.

Bullock's Oriole Population Forecast in Wyoming

If the recent trend holds, Bullock's Oriole in Wyoming is projected to stay roughly flat through 2029, near 1.5 (95% range 0.82–2.1). A 5-year backtest shows a typical error of ±10.2%, with 100% of held-out values landing inside the 95% band.

-8%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 →
1.5Projected 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 →
0.82–2.195% 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 →
±10.2%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, Bullock's Oriole in Wyoming is projected to stay roughly flat through 2029, near 1.5 (95% range 0.82–2.1). A 5-year backtest shows a typical error of ±10.2%, 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 →
20251.40.792.1
20261.40.802.1
20271.50.812.1
20281.50.812.1
20291.50.822.1

Bullock's Oriole Survey Routes in Wyoming

Routes recording Bullock's Oriole 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 →
Wyarno4120241974
Lingle1820241980
Arvada1720241983
Green River1119841977
Midvale920221987
Yoder820241969
Otto620241970
Sussex620241992
Frannie420232000
Tensleep420231996
Harmony420222021
Cody320241983
Basin320241970
Sundance320241975
Dayton320241980
Seely320001990
Mayoworth320241982
Meadowdale320191983
Kaycee320242024
Redbird219891968
Fontenelle220241983
Riverside220152002
Meeteetse220231992
Upton220241987
Wilson220241979

Bullock's Oriole Population Trend in Other States

arizonacaliforniacoloradoidahokansasmontananebraskanevadanew-mexiconorth-dakotaoklahomaoregonsouth-dakotatexasutahwashington

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.