BirdAnalyst
Species · BCR 29 · BBS 2026 Release · 1966–2025

Chipping Sparrow In Piedmont

All regionsPiedmontForest birds

Chipping Sparrow in Piedmont has risen sharply: up 66% on the route-weighted index since 1968.

+66%Since 1968TrendPercent 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 →
171Routes 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 →
59YearsYears 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 →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Chipping Sparrow has risen sharply in Piedmont: up 66% on the route-weighted index since 1968.

Chipping Sparrow In Piedmont Population Forecast

If the recent trend holds, Chipping Sparrow in Piedmont is projected to stay roughly flat through 2030, near 28 (95% range 23–33). A 5-year backtest shows a typical error of ±3.9%, with 100% of held-out values landing inside the 95% band.

-4%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 →
28Projected 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 →
23–3395% 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 →
±3.9%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 Piedmont is projected to stay roughly flat through 2030, near 28 (95% range 23–33). A 5-year backtest shows a typical error of ±3.9%, with 100% of held-out values landing inside the 95% band.19662030
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 →
2026272232
2027272232
2028282333
2029282333
2030282333

Routes In Piedmont

Routes recording Chipping Sparrow in Piedmont.
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 →
OlneyMARYLAND962025
MadonnaMARYLAND912022
IjamsvilleMARYLAND802025
EarltonMARYLAND712024
EmmitsburgMARYLAND672025
MetasvilleGEORGIA592000
FinchleyVIRGINIA582021
OakboroNORTH-CAROLINA562025
DurhamNORTH-CAROLINA552025
EkloMARYLAND532018
LincolntonGEORGIA522017
YoungsvilleNORTH-CAROLINA522025
OstwaltNORTH-CAROLINA512025
RutledgeGEORGIA502025
BrodnaxVIRGINIA482025
WylliesburgVIRGINIA472019
WarfieldsbrgMARYLAND462025
CherryvilleNORTH-CAROLINA451968
WheatonMARYLAND442025
JordanNORTH-CAROLINA442025
Little MtnSOUTH-CAROLINA441988
MaxeysGEORGIA432024
ClimaxNORTH-CAROLINA432025
CandlerGEORGIA422025
RinggoldVIRGINIA422025

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