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Species · Wyoming · BBS 2026 Release · 1966–2025

Yellow-breasted Chat Population Trend in Wyoming

All statesForest birds

Yellow-breasted Chat in Wyoming has edged up: up 11% on the route-weighted index since 1971.

+11%Since 1971TrendPercent 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 →
46Routes 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 →
55YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Yellow-breasted Chat 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 →

No notable trend signals for Yellow-breasted Chat in Wyoming. See the full index history below.

Yellow-breasted Chat Population Forecast in Wyoming

If the recent trend holds, Yellow-breasted Chat in Wyoming is projected to fall about 38% by 2030 — from 0.34 in 2025 to a central estimate of 0.21 (95% range 0.00–1.0). A 5-year backtest shows a typical error of ±35.3%, with 100% of held-out values landing inside the 95% band.

-38%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 →
0.21Projected 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 →
0.00–1.095% 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 →
±35.3%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, Yellow-breasted Chat in Wyoming is projected to fall about 38% by 2030 — from 0.34 in 2025 to a central estimate of 0.21 (95% range 0.00–1.0). A 5-year backtest shows a typical error of ±35.3%, with 100% of held-out values landing inside the 95% band.19692030
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 →
20260.240.001.1
20270.230.001.1
20280.230.001.1
20290.220.001.1
20300.210.001.0

Yellow-breasted Chat Survey Routes in Wyoming

Routes recording Yellow-breasted Chat 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 →
Green River2119821977
Schoonover820231987
Rock Springs819831978
Gebo720252013
Lovell520241989
Fletcher Pk520251981
Mtn View519831980
Sybille Cyn520251999
Cody420181994
Cumberland319821978
Fontenelle220211983
Brookhurst220221969
Seely 2220152007
Dwyer220252025
Clark220251990
Tensleep220252009
Anchor220182004
Otto120251970
Wyarno120231974
Sundance120241975
Dubois120142014
Nowood120252024
Bill120182018
Ervay120212014
Mckinnon119811981

Yellow-breasted Chat Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasutahvirginiawashingtonwest-virginiawisconsin

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