BirdAnalyst
Species · BCR 21 · BBS 2026 Release · 1966–2025

Bullock's Oriole In Oaks and Prairies

All regionsOaks and PrairiesForest birds

Bullock's Oriole in Oaks and Prairies has edged up: up 21% on the route-weighted index since 1969.

+21%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 →
23Routes In RegionSurvey 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 SignalsNotable 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 Oaks and Prairies. See the full index history below.

Bullock's Oriole In Oaks and Prairies Population Forecast

If the recent trend holds, Bullock's Oriole in Oaks and Prairies is projected to fall about 54% by 2030 — from 0.86 in 2025 to a central estimate of 0.40 (95% range 0.00–0.83). A 5-year backtest shows a typical error of ±48.2%, with 60% of held-out values landing inside the 95% band.

-54%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 →
0.40Projected 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 →
0.00–0.8395% 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 →
±48.2%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 Oaks and Prairies is projected to fall about 54% by 2030 — from 0.86 in 2025 to a central estimate of 0.40 (95% range 0.00–0.83). A 5-year backtest shows a typical error of ±48.2%, with 60% 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 →
20260.410.000.85
20270.410.000.85
20280.410.000.84
20290.400.000.84
20300.400.000.83

Routes In Oaks and Prairies

Routes recording Bullock's Oriole in Oaks and Prairies.
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 →
BriteTEXAS202025
MegargelTEXAS92025
Three RiversTEXAS72025
HenriettaTEXAS62022
CampbelltonTEXAS52024
AlbanyTEXAS42025
Whit Mtn.TEXAS31995
HobsonTEXAS22025
Lone OakTEXAS22003
OsageTEXAS21971
SchroederTEXAS11976
MuldoonTEXAS11989
LockhartTEXAS11981
Glen RoseTEXAS12000
SeldenTEXAS11994
GrafordTEXAS12006
CottonwoodTEXAS11998
RhomeTEXAS11998
OlneyTEXAS12024
CreedmoreTEXAS12013
DuranTEXAS11996
DecaturTEXAS12010
ComancheTEXAS12011

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