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Species · Oregon · BBS 2025 Release · 1966–2024

Golden-crowned Kinglet Population Trend in Oregon

All statesForest birds

Golden-crowned Kinglet in Oregon has edged down: down 15% on the route-weighted index since 1970.

-15%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 →
86Routes 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 →
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 Golden-crowned Kinglet 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 →

No notable trend signals for Golden-crowned Kinglet in Oregon. See the full index history below.

Golden-crowned Kinglet Population Forecast in Oregon

If the recent trend holds, Golden-crowned Kinglet in Oregon is projected to rise about 53% by 2029 — from 1.9 in 2024 to a central estimate of 2.9 (95% range 1.2–4.5). A 5-year backtest shows a typical error of ±90.8%, with 60% of held-out values landing inside the 95% band.

+53%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 →
2.9Projected 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 →
1.2–4.595% 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 →
±90.8%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, Golden-crowned Kinglet in Oregon is projected to rise about 53% by 2029 — from 1.9 in 2024 to a central estimate of 2.9 (95% range 1.2–4.5). A 5-year backtest shows a typical error of ±90.8%, with 60% 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 →
20252.81.24.4
20262.81.24.4
20272.81.24.4
20282.81.24.5
20292.91.24.5

Golden-crowned Kinglet Survey Routes in Oregon

Routes recording Golden-crowned Kinglet 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 →
Clearwater2220211991
Howard Mdws.2020241992
Trask Summit1820231992
Eagle Creek1720221993
Shellrock1520231968
Warner Mtn.1520241992
Svensen1319921990
Hash Rock1320241983
Newbridge1320242001
Desolation1220071998
Nicolai Mtn.1120241993
Barnhouse1120241998
Black Mtn.1020041993
Blue River720241992
Harlan 2720242011
Cool Camp620131969
Wickiup620241970
Wedderburn620241970
Mt Hood620241972
Ochoco620241993
Myrtle Grove620241992
Sisters620242000
Dell Spring519881968
Barnes Val519871987
Secret Val519931975

Golden-crowned Kinglet Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutgeorgiaidahomainemarylandmassachusettsmichiganminnesotamontananevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiopennsylvaniasouth-dakotatennesseeutahvermontwashingtonwest-virginiawisconsinwyoming

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