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Species · Oklahoma · BBS 2026 Release · 1966–2025

Bullock's Oriole Population Trend in Oklahoma

All statesForest birds

Bullock's Oriole in Oklahoma has held roughly steady: down 8% on the route-weighted index since 1969.

-8%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 →
21Routes 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 Bullock's Oriole 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 Bullock's Oriole in Oklahoma. See the full index history below.

Bullock's Oriole Population Forecast in Oklahoma

If the recent trend holds, Bullock's Oriole in Oklahoma is projected to rise about 90% by 2030 — from 0.37 in 2025 to a central estimate of 0.70 (95% range 0.16–1.2). A 5-year backtest shows a typical error of ±32.7%, with 100% of held-out values landing inside the 95% band.

+90%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 →
0.70Projected 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 →
0.16–1.295% 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 →
±32.7%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 Oklahoma is projected to rise about 90% by 2030 — from 0.37 in 2025 to a central estimate of 0.70 (95% range 0.16–1.2). A 5-year backtest shows a typical error of ±32.7%, 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 →
20260.700.161.2
20270.700.161.2
20280.700.161.2
20290.700.161.2
20300.700.161.2

Bullock's Oriole Survey Routes in Oklahoma

Routes recording Bullock's Oriole 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 →
Felt920241968
Eagle City519971969
Erick520181969
Randlett420051991
Cookietown420061968
Reed320191968
Hardesty320241973
Cooperton319961996
Hollis320251993
Hooker320251992
Grimes220251967
Rosston220111967
Beaver220181980
Clear Lake220251995
Elgin120162013
Chester119841984
Tegarden119801980
Lookout120021968
Sickles120121997
Woodward120162016
Keyes120231997

Bullock's Oriole Population Trend in Other States

arizonacaliforniacoloradoidahokansasmontananebraskanevadanew-mexiconorth-dakotaoregonsouth-dakotatexasutahwashingtonwyoming

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