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

Chipping Sparrow Population Trend in Colorado

All statesGeneralists

Chipping Sparrow in Colorado has surged: up 152% on the route-weighted index since 1970.

+152%Since 1970
110Routes In State
56Years

Notable Chipping Sparrow Trends in Colorado

long arc increasecomputed index

Chipping Sparrow has surged in Colorado: up 152% on the route-weighted index since 1970.

Chipping Sparrow Population Forecast in Colorado

If the recent trend holds, Chipping Sparrow in Colorado is projected to rise about 24% by 2029 — from 4.2 in 2024 to a central estimate of 5.2 (95% range 3.3–7.0). A 5-year backtest shows a typical error of ±40.6%, with 60% of held-out values landing inside the 95% band.

+24%Change by 2029
5.2Projected 2029 index
3.3–7.095% range
±40.6%Backtest error
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 index95% low95% high
20255.03.26.8
20265.03.26.9
20275.13.36.9
20285.13.37.0
20295.23.37.0

Chipping Sparrow Survey Routes in Colorado

Routes recording Chipping Sparrow in Colorado.
Mcphee Res.4020241996
Alamosa2719921992
Buffalo Park2020231992
Ludlow2020161998
De Beque1620241992
Pinon1620241992
Wet Mtns.1620241993
Haycamp Mesa1620241998
Douglas Pass1420241982
Nucla1420241999
Animas1320041996
Aspen1220241979
Delta1120211973
Fox Creek1120241993
Gribbles Prk1120241994
Angora1120241998
Uncompahgre1020241988
Cone Mtn1020182018
Flattops1020191992
Gold Hill1020121998
Lizard Head Pass1020242001
Mesaverde Np1020241996
Cheesman Lk920241969
Wray Gulch920231988
Deadman Rd.920241992

Chipping Sparrow Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniaconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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