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

Yellow-breasted Chat Population Trend in Wyoming

All statesGeneralists

Yellow-breasted Chat in Wyoming has held roughly steady: up 5% on the route-weighted index since 1971.

+5%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 →
45Routes 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 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 35% by 2029 — from 0.33 in 2024 to a central estimate of 0.21 (95% range 0.00–1.1). A 5-year backtest shows a typical error of ±45%, with 100% of held-out values landing inside the 95% band.

-35%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 →
0.21Projected 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 →
0.00–1.195% 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 →
±45%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 35% by 2029 — from 0.33 in 2024 to a central estimate of 0.21 (95% range 0.00–1.1). A 5-year backtest shows a typical error of ±45%, with 100% of held-out values landing inside the 95% band.19692029
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 →
20250.240.001.1
20260.230.001.1
20270.230.001.1
20280.220.001.1
20290.210.001.1

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
Clark620241990
Gebo620242013
Lovell520241989
Mtn View519831980
Cody420181994
Cumberland319821978
Fletcher Pk320241981
Nowood220242024
Fontenelle220211983
Brookhurst220221969
Seely 2220152007
Dayton220241980
Anchor220182004
Otto120241970
Wyarno120231974
Sundance120241975
Dubois120142014
Bill120182018
Ervay120212014
Mckinnon119811981
Gvnt Valley120032003
Yoder120002000

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 2026-05-22.