BirdAnalyst
Species · Wyoming · BBS 2026 Release · 1966–2025

Ruby-crowned Kinglet Population Trend in Wyoming

All statesForest birds

Ruby-crowned Kinglet in Wyoming has surged: up 477% on the route-weighted index since 1970.

+477%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 →
54YearsYears 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 477% 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 44% by 2030 — from 4.0 in 2025 to a central estimate of 5.8 (95% range 3.8–7.7). A 5-year backtest shows a typical error of ±33.3%, with 80% of held-out values landing inside the 95% band.

+44%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 →
5.8Projected 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 →
3.8–7.795% 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 →
±33.3%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 44% by 2030 — from 4.0 in 2025 to a central estimate of 5.8 (95% range 3.8–7.7). A 5-year backtest shows a typical error of ±33.3%, with 80% 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 →
20265.53.57.5
20275.63.67.5
20285.63.77.6
20295.73.77.7
20305.83.87.7

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 →
Yellowstone4920251987
Alpine4320251979
Crazy Woman4120241980
Colter Bay 23220252019
Colter Bay2919991968
Fiddler Lk2920251979
Fox Park2920251993
Soda Lake2820251980
Hunter Peak2620251982
Ryan Park2520251993
Horse Creek2220251980
Savery1719951989
Moose1520251976
Wilson1520251979
Mammoth1420251982
Moran1320162002
Ne Entrance1220251982
West Thumb1219821982
Hayden Val1119861985
Buckskin Mtn1020251980
Moskee 2820192002
Prior Flats720251991
Warbonnet720251990
Bald Mtn620251990
Moskee320001980

Ruby-crowned Kinglet Population Trend in Other States

alaskaarizonacaliforniacoloradoidahomainemichiganminnesotamontananevadanew-hampshirenew-mexiconew-yorkoregonsouth-dakotautahvermontwashingtonwisconsin

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