BirdAnalyst
Species · BCR 16 · BBS 2026 Release · 1966–2025

Chipping Sparrow In Southern Rockies / Colorado Plateau

All regionsSouthern Rockies / Colorado PlateauForest birds

Chipping Sparrow in Southern Rockies / Colorado Plateau has increased: up 49% on the route-weighted index since 1970.

+49%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 →
221Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable 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 Southern Rockies / Colorado Plateau. See the full index history below.

Chipping Sparrow In Southern Rockies / Colorado Plateau Population Forecast

If the recent trend holds, Chipping Sparrow in Southern Rockies / Colorado Plateau is projected to rise about 18% by 2030 — from 6.4 in 2025 to a central estimate of 7.5 (95% range 4.9–10). A 5-year backtest shows a typical error of ±32.8%, with 80% of held-out values landing inside the 95% band.

+18%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 →
7.5Projected 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 →
4.9–1095% 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 →
±32.8%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 Southern Rockies / Colorado Plateau is projected to rise about 18% by 2030 — from 6.4 in 2025 to a central estimate of 7.5 (95% range 4.9–10). A 5-year backtest shows a typical error of ±32.8%, 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 →
20267.54.810
20277.54.810
20287.54.810
20297.54.910
20307.54.910

Routes In Southern Rockies / Colorado Plateau

Routes recording Chipping Sparrow in Southern Rockies / Colorado Plateau.
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 →
Grizzly RdgeUTAH412025
TsaileARIZONA392023
Dixie NfUTAH372025
Mcphee Res.COLORADO362025
PecosNEW-MEXICO342017
Navajo LakeUTAH302025
FayetteUTAH302025
Dry ParkARIZONA282025
AlamosaCOLORADO271992
Rifle FallsCOLORADO272025
Mt. TaylorNEW-MEXICO272012
Lost Cr. ResUTAH262018
Bryce CanyonUTAH252025
AspenCOLORADO242025
Angel FireNEW-MEXICO222002
RichfieldUTAH212019
Mt. Taylor 2NEW-MEXICO202024
PinonCOLORADO192025
Stinking Lk.NEW-MEXICO191999
SawmillARIZONA182014
Lake City 2COLORADO182025
FerronUTAH182025
La Sal 3UTAH182025
SoapstoneUTAH172025
ZeniffARIZONA161984

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