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Species · Oregon · BBS 2025 Release · 1966–2024

Hutton's Vireo Population Trend in Oregon

All statesForest birds

Hutton's Vireo in Oregon has surged: up 447% on the route-weighted index since 1972.

+447%Since 1972TrendPercent 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 →
51Routes 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 →
52YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Hutton's Vireo Trends in OregonNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Hutton's Vireo has surged in Oregon: up 447% on the route-weighted index since 1972.

Hutton's Vireo Population Forecast in Oregon

If the recent trend holds, Hutton's Vireo in Oregon is projected to rise about 56% by 2029 — from 0.35 in 2024 to a central estimate of 0.56 (95% range 0.28–0.83). A 5-year backtest shows a typical error of ±44.5%, with 100% of held-out values landing inside the 95% band.

+56%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 →
0.56Projected 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 →
0.28–0.8395% 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 →
±44.5%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, Hutton's Vireo in Oregon is projected to rise about 56% by 2029 — from 0.35 in 2024 to a central estimate of 0.56 (95% range 0.28–0.83). A 5-year backtest shows a typical error of ±44.5%, with 100% of held-out values landing inside the 95% band.19692029
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 →
20250.520.240.80
20260.530.250.81
20270.540.260.82
20280.550.270.83
20290.560.280.83

Hutton's Vireo Survey Routes in Oregon

Routes recording Hutton's Vireo in Oregon.
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 →
Harlan 21120242012
Waldport619991992
Hazel Camp520221978
Trask Summit520191992
Coquille520221998
Klickitat Mt519961993
Riley Peak320161994
Garfield320231989
Svensen319911991
Sandy River220041993
Molalla220051997
Days Creek220241974
Mt Hood220222021
Elkton220241986
Secret Val220091976
Fisher220081997
Green220241994
Myrtle Grove220241992
Ruch220231995
Cinderella220241996
Glasgow220241988
Selma220241996
Timber120171990
Tualatin120242012
Santiam120241994

Hutton's Vireo Population Trend in Other States

arizonacalifornianew-mexicotexaswashington

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