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

Chipping Sparrow Population Trend in Wyoming

All statesGeneralists

Chipping Sparrow in Wyoming has edged down: down 19% on the route-weighted index since 1970.

-19%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 →
108Routes 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 →
56YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Chipping Sparrow 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 Chipping Sparrow in Wyoming. See the full index history below.

Chipping Sparrow Population Forecast in Wyoming

If the recent trend holds, Chipping Sparrow in Wyoming is projected to rise about 12% by 2029 — from 4.5 in 2024 to a central estimate of 5.1 (95% range 2.1–8.0). A 5-year backtest shows a typical error of ±47.6%, with 100% of held-out values landing inside the 95% band.

+12%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 →
5.1Projected 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 →
2.1–8.095% 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 →
±47.6%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, Chipping Sparrow in Wyoming is projected to rise about 12% by 2029 — from 4.5 in 2024 to a central estimate of 5.1 (95% range 2.1–8.0). A 5-year backtest shows a typical error of ±47.6%, with 100% 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 →
20255.02.07.9
20265.02.07.9
20275.02.08.0
20285.02.18.0
20295.12.18.0

Chipping Sparrow Survey Routes in Wyoming

Routes recording Chipping Sparrow 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 →
Moran5120162002
Big Sandy4720241989
Colter Bay 24620242019
Alpine2820241979
Hampshire2820011994
Sundance2620241975
Moskee2520011980
Crazy Woman2420241979
Mammoth2120241982
Hunter Peak2120241982
Bill2020011993
Fiddler Lk2020241979
Colter Bay1919991968
Moskee 31820242022
Buckskin Mtn1620211980
Cody1520181993
Nowood1520241993
Wilson1520241979
Hayden Val1419861985
Meeteetse1320241992
Bald Mtn1320241990
Soda Lake1320241980
Meadowdale1219951989
Savery1019951989
Recluse1020241988

Chipping Sparrow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsin

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