BirdAnalyst
Species · BCR 5 · BBS 2026 Release · 1966–2025

Hutton's Vireo In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestForest birds

Hutton's Vireo in Northern Pacific Rainforest has surged: up 137% on the route-weighted index since 1970.

+137%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 →
57YearsYears 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 137% 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 stay roughly flat through 2030, near 1.2 (95% range 0.32–2.0). A 5-year backtest shows a typical error of ±50.9%, with 100% of held-out values landing inside the 95% band.

+2%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 →
1.2Projected 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 →
0.32–2.095% 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 →
±50.9%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 stay roughly flat through 2030, near 1.2 (95% range 0.32–2.0). A 5-year backtest shows a typical error of ±50.9%, with 100% of held-out values landing inside the 95% band.19682030
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 →
20261.20.332.1
20271.20.322.1
20281.20.322.1
20291.20.322.1
20301.20.322.0

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 →
Harlan 2OREGON172025
Martins FyCALIFORNIA112009
Shasta LakeCALIFORNIA112025
AlderpointCALIFORNIA92012
RuchOREGON92025
HiouchiCALIFORNIA82014
Redwood N.P. 2CALIFORNIA82013
Fish RockCALIFORNIA72014
French GulchCALIFORNIA72010
CecilvilleCALIFORNIA62017
WaldportOREGON61999
KorbelCALIFORNIA52025
Redwood N.P.CALIFORNIA52010
Hazel CampOREGON52022
Trask SummitOREGON52019
Klickitat MtOREGON51996
HoneydewCALIFORNIA42017
OrleansCALIFORNIA42012
OzetteWASHINGTON42025
Mendota 2WASHINGTON41996
HullvilleCALIFORNIA32019
Rio DellCALIFORNIA32011
Junction CtyCALIFORNIA32012
MccloudCALIFORNIA32008
UkiahCALIFORNIA32011

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