BirdAnalyst
Species · BCR 5 · BBS 2025 Release · 1966–2024

Hutton's Vireo In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestForest birds

Hutton's Vireo in Northern Pacific Rainforest has surged: up 112% on the route-weighted index since 1970.

+112%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 →
115Routes 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 →
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 SignalsNotable 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 Northern Pacific Rainforest: up 112% on the route-weighted index since 1970.

Hutton's Vireo In Northern Pacific Rainforest Population Forecast

If the recent trend holds, Hutton's Vireo in Northern Pacific Rainforest is projected to rise about 33% by 2029 — from 0.89 in 2024 to a central estimate of 1.2 (95% range 0.32–2.1). A 5-year backtest shows a typical error of ±50.2%, with 100% of held-out values landing inside the 95% band.

+33%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 →
1.2Projected 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 →
0.32–2.195% 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 →
±50.2%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, Hutton's Vireo in Northern Pacific Rainforest is projected to rise about 33% by 2029 — from 0.89 in 2024 to a central estimate of 1.2 (95% range 0.32–2.1). A 5-year backtest shows a typical error of ±50.2%, 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 →
20251.20.322.1
20261.20.322.1
20271.20.322.1
20281.20.322.1
20291.20.322.1

Routes In Northern Pacific Rainforest

Routes recording Hutton's Vireo in Northern Pacific Rainforest.
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 →
Martins FyCALIFORNIA112009
Harlan 2OREGON112024
AlderpointCALIFORNIA92012
HiouchiCALIFORNIA82014
Redwood N.P. 2CALIFORNIA82013
Fish RockCALIFORNIA72014
Shasta LakeCALIFORNIA72024
KorbelCALIFORNIA72024
French GulchCALIFORNIA72010
CecilvilleCALIFORNIA62017
WaldportOREGON61999
Redwood N.P.CALIFORNIA52010
Hazel CampOREGON52022
Trask SummitOREGON52019
CoquilleOREGON52022
Klickitat MtOREGON51996
HoneydewCALIFORNIA42017
OrleansCALIFORNIA42012
OzetteWASHINGTON42024
Mendota 2WASHINGTON41996
HolmesCALIFORNIA32024
HullvilleCALIFORNIA32019
Rio DellCALIFORNIA32011
Junction CtyCALIFORNIA32012
MccloudCALIFORNIA32008

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