BirdAnalyst
Species · BCR 29 · BBS 2025 Release · 1966–2024

Chipping Sparrow In Piedmont

All regionsPiedmontGeneralists

Chipping Sparrow in Piedmont has risen sharply: up 57% on the route-weighted index since 1968.

+57%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 →
58YearsYears 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 57% 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 2029, near 28 (95% range 23–33). A 5-year backtest shows a typical error of ±2.6%, with 100% of held-out values landing inside the 95% band.

+6%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 →
28Projected 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 →
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 →
±2.6%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 Piedmont is projected to stay roughly flat through 2029, near 28 (95% range 23–33). A 5-year backtest shows a typical error of ±2.6%, with 100% of held-out values landing inside the 95% band.19662029
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 →
2025262131
2026272232
2027272232
2028272232
2029282333

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 →
MadonnaMARYLAND912022
IjamsvilleMARYLAND772024
EarltonMARYLAND712024
OlneyMARYLAND652024
MetasvilleGEORGIA592000
EmmitsburgMARYLAND592024
FinchleyVIRGINIA582021
HallVIRGINIA562023
EkloMARYLAND532018
OstwaltNORTH-CAROLINA532024
LincolntonGEORGIA522017
YoungsvilleNORTH-CAROLINA512024
CandlerGEORGIA472024
WylliesburgVIRGINIA472019
DurhamNORTH-CAROLINA462024
ChathamPENNSYLVANIA462024
OakboroNORTH-CAROLINA452024
CherryvilleNORTH-CAROLINA451968
Little MtnSOUTH-CAROLINA441988
MaxeysGEORGIA432024
WhitesburgGEORGIA432024
ClimaxNORTH-CAROLINA432024
FlayNORTH-CAROLINA432024
WheatonMARYLAND422024
OsmondNORTH-CAROLINA422024

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