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Species · Colorado · BBS 2025 Release · 1966–2024

Golden-crowned Kinglet Population Trend in Colorado

All statesForest birds

Golden-crowned Kinglet in Colorado has edged down: down 20% on the route-weighted index since 1985.

-20%Since 1985TrendPercent 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 →
41Routes 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 →
40YearsYears 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 ColoradoNotable 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 Colorado. See the full index history below.

Golden-crowned Kinglet Population Forecast in Colorado

If the recent trend holds, Golden-crowned Kinglet in Colorado is projected to rise about 19% by 2029 — from 0.11 in 2024 to a central estimate of 0.14 (95% range 0.00–0.27). A 5-year backtest shows a typical error of ±81.5%, with 100% of held-out values landing inside the 95% band.

+19%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 →
0.14Projected 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 →
0.00–0.2795% 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 →
±81.5%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 Colorado is projected to rise about 19% by 2029 — from 0.11 in 2024 to a central estimate of 0.14 (95% range 0.00–0.27). A 5-year backtest shows a typical error of ±81.5%, with 100% of held-out values landing inside the 95% band.19702029
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 →
20250.140.000.27
20260.140.000.27
20270.140.000.27
20280.140.000.27
20290.140.000.27

Golden-crowned Kinglet Survey Routes in Colorado

Routes recording Golden-crowned Kinglet in Colorado.
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 →
Blackhead Pk620191993
Rifle Falls520092001
Dolores Riv420041988
Radium420111999
Haycamp Mesa420211998
Mount Evans320192000
Steamboat L.320242024
Thomasville320072002
Guanella Pas320191992
Moon Pass320102004
Red Cliff220171989
Pinos Creek219891989
South Fork220241997
Dunckley Pas220242024
Deadman Rd.220241995
Flattops220191995
Fox Creek220162016
Rollins Pass220151998
Owl Creek Pass220221998
Heeney220192019
Yampa120072007
Aspen119951985
Cheesman Lk120001990
Parlin120041970
Rio Grnds Rs120061991

Golden-crowned Kinglet Population Trend in Other States

alaskaarizonacaliforniaconnecticutgeorgiaidahomainemarylandmassachusettsmichiganminnesotamontananevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiooregonpennsylvaniasouth-dakotatennesseeutahvermontwashingtonwest-virginiawisconsinwyoming

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