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Species · Wyoming · BBS 2026 Release · 1966–2025

Black-capped Chickadee Population Trend in Wyoming

All statesForest birds

Black-capped Chickadee in Wyoming has held roughly steady: down 7% on the route-weighted index since 1971.

-7%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 →
73Routes 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 Black-capped Chickadee 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 Black-capped Chickadee in Wyoming. See the full index history below.

Black-capped Chickadee Population Forecast in Wyoming

If the recent trend holds, Black-capped Chickadee in Wyoming is projected to stay roughly flat through 2030, near 0.74 (95% range 0.00–1.5). A 5-year backtest shows a typical error of ±30%, with 80% of held-out values landing inside the 95% band.

+1%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 →
0.74Projected 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 →
0.00–1.595% 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 →
±30%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, Black-capped Chickadee in Wyoming is projected to stay roughly flat through 2030, near 0.74 (95% range 0.00–1.5). A 5-year backtest shows a typical error of ±30%, 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 →
20260.750.001.5
20270.750.001.5
20280.740.001.5
20290.740.001.5
20300.740.001.5

Black-capped Chickadee Survey Routes in Wyoming

Routes recording Black-capped Chickadee 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 →
Colter Bay 23020212019
Sundance2320251975
Moran1420162002
Moskee920011980
Wilson920251979
Moskee 3820252022
Moskee 2720212002
Bald Mtn620221995
Green River619821977
Seely 2520252001
Fiddler Lk520251980
Warbonnet519981990
Otto420251974
Colter Bay419991968
Dayton420251981
Recluse420221987
Soda Well420231982
Crowheart420162004
Soda Lake420241980
Walcott420211985
Chugwater419811981
Buford319781977
Raven319991995
Daniel319841980
Yellowstone220002000

Black-capped Chickadee Population Trend in Other States

alaskacaliforniacoloradoconnecticutidahoillinoisindianaiowakansasmainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsin

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