BirdAnalyst
Species · Wyoming · BBS 2025 Release · 1966–2024

Ruby-crowned Kinglet Population Trend in Wyoming

All statesForest birds

Ruby-crowned Kinglet in Wyoming has surged: up 405% on the route-weighted index since 1970.

+405%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 →
48Routes 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 →
53YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Ruby-crowned Kinglet Trends in WyomingNotable 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 →

Ruby-crowned Kinglet has surged in Wyoming: up 405% on the route-weighted index since 1970.

Ruby-crowned Kinglet Population Forecast in Wyoming

If the recent trend holds, Ruby-crowned Kinglet in Wyoming is projected to rise about 51% by 2029 — from 3.8 in 2024 to a central estimate of 5.7 (95% range 3.7–7.7). A 5-year backtest shows a typical error of ±34.2%, with 80% of held-out values landing inside the 95% band.

+51%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 →
5.7Projected 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 →
3.7–7.795% 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 →
±34.2%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, Ruby-crowned Kinglet in Wyoming is projected to rise about 51% by 2029 — from 3.8 in 2024 to a central estimate of 5.7 (95% range 3.7–7.7). A 5-year backtest shows a typical error of ±34.2%, with 80% 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 →
20255.43.47.4
20265.53.57.5
20275.63.67.6
20285.63.67.7
20295.73.77.7

Ruby-crowned Kinglet Survey Routes in Wyoming

Routes recording Ruby-crowned Kinglet in Wyoming.
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 →
Alpine5520241979
Colter Bay 25420242019
Crazy Woman4120241980
Fox Park3420241993
Yellowstone3120221987
Colter Bay2919991968
Mammoth2920241982
Ryan Park2520231993
Horse Creek2420241980
Fiddler Lk2220241979
Ne Entrance2120211982
Hunter Peak2020241982
Savery1719951989
Soda Lake1720241980
Buckskin Mtn1320211980
Moran1320162002
West Thumb1219821982
Hayden Val1119861985
Moose1020241976
Wilson1020241979
Moskee 2820192002
Bald Mtn620241990
Warbonnet620241990
Prior Flats520241991
Sundance520231976

Ruby-crowned Kinglet Population Trend in Other States

alaskaarizonacaliforniacoloradoidahomainemichiganminnesotamontananevadanew-hampshirenew-mexiconew-yorkoregonsouth-dakotautahvermontwashingtonwisconsin

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