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Species · Washington · BBS 2026 Release · 1966–2025

Golden-crowned Kinglet Population Trend in Washington

All statesForest birds

Golden-crowned Kinglet in Washington has increased: up 28% on the route-weighted index since 1970.

+28%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 →
73Routes 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 →
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 Golden-crowned Kinglet Trends in WashingtonNotable 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 Washington. See the full index history below.

Golden-crowned Kinglet Population Forecast in Washington

If the recent trend holds, Golden-crowned Kinglet in Washington is projected to rise about 13% by 2030 — from 4.0 in 2025 to a central estimate of 4.6 (95% range 1.9–7.2). A 5-year backtest shows a typical error of ±35.1%, with 100% of held-out values landing inside the 95% band.

+13%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 →
4.6Projected 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 →
1.9–7.295% 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 →
±35.1%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 Washington is projected to rise about 13% by 2030 — from 4.0 in 2025 to a central estimate of 4.6 (95% range 1.9–7.2). A 5-year backtest shows a typical error of ±35.1%, 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 →
20264.61.97.2
20274.61.97.2
20284.61.97.2
20294.61.97.2
20304.61.97.2

Golden-crowned Kinglet Survey Routes in Washington

Routes recording Golden-crowned Kinglet in Washington.
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 →
Taholah2220221969
Glacier2220241975
Ozette1820251971
Sullivan Lake 21720252000
Mt. Adams1620251993
Montesand1520241986
Ilwaco1420251975
Mendota1419881977
Suiattle Riv1420191993
Issaquah1319871969
Twin Lakes1220251984
Cedar Falls1220141993
Vashon Is.1120251995
Neilton1119751975
Mt St Helens1120241992
E. Mt. Adams1020251995
Ronald920251973
Raymond 2920242022
Mendota 2820001989
Carlton820171992
Hurricane Rg820251992
L. Wenatchee820251994
Newhalem720241968
Kendall720251981
Raymond720211993

Golden-crowned Kinglet Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutgeorgiaidahomainemarylandmassachusettsmichiganminnesotamontananevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiooregonpennsylvaniasouth-dakotatennesseeutahvermontwest-virginiawisconsinwyoming

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