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Species · Washington · BBS 2025 Release · 1966–2024

Golden-crowned Kinglet Population Trend in Washington

All statesForest birds

Golden-crowned Kinglet in Washington has edged up: up 22% on the route-weighted index since 1970.

+22%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 →
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 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 fall about 28% by 2029 — from 6.4 in 2024 to a central estimate of 4.6 (95% range 1.9–7.3). A 5-year backtest shows a typical error of ±32.8%, with 100% of held-out values landing inside the 95% band.

-28%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 →
4.6Projected 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 →
1.9–7.395% 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 →
±32.8%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 Washington is projected to fall about 28% by 2029 — from 6.4 in 2024 to a central estimate of 4.6 (95% range 1.9–7.3). A 5-year backtest shows a typical error of ±32.8%, 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 →
20254.72.07.3
20264.62.07.3
20274.62.07.3
20284.62.07.3
20294.61.97.3

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 →
Mt. Adams2620241993
Sullivan Lake 22420242000
Ozette2220241971
Taholah2220221969
Vashon Is.2220241995
Glacier2220241975
E. Mt. Adams2020241995
Kendall1720241981
Greenwater1720242015
Rimrock1620241968
Montesand1520241986
Ronald1520241973
Blewett Pass1520241992
Mendota1419881977
Suiattle Riv1420191993
Issaquah1319871969
Cedar Falls1220141993
Twin Lakes1120241984
Neilton1119751975
Mt St Helens1120241992
Port Angeles920241970
Raymond 2920242022
Ilwaco920241975
Mendota 2820001989
Carlton820171992

Golden-crowned Kinglet Population Trend in Other States

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

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