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

Northern Mockingbird In Piedmont

All regionsPiedmontGeneralists

Northern Mockingbird in Piedmont has declined: down 35% on the route-weighted index since 1968.

-35%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 →
170Routes 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 →

No notable trend signals for Northern Mockingbird in Piedmont. See the full index history below.

Northern Mockingbird In Piedmont Population Forecast

If the recent trend holds, Northern Mockingbird in Piedmont is projected to stay roughly flat through 2029, near 22 (95% range 17–28). A 5-year backtest shows a typical error of ±9%, with 100% of held-out values landing inside the 95% band.

-10%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 →
22Projected 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 →
17–2895% 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 →
±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, Northern Mockingbird in Piedmont is projected to stay roughly flat through 2029, near 22 (95% range 17–28). A 5-year backtest shows a typical error of ±9%, 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 →
2025231728
2026231728
2027231728
2028231728
2029221728

Routes In Piedmont

Routes recording Northern Mockingbird 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 →
MooresvilleNORTH-CAROLINA702001
LincolntonGEORGIA622017
EarltonMARYLAND602024
MaxeysGEORGIA582024
IjamsvilleMARYLAND572024
CherryvilleNORTH-CAROLINA541968
Rock BranchGEORGIA522024
PendletonSOUTH-CAROLINA521976
Lincolnton 2GEORGIA512024
Bald FriarMARYLAND511996
CandlerGEORGIA502024
OlneyMARYLAND502024
Boiling SpgsSOUTH-CAROLINA501979
MadonnaMARYLAND492022
WilgroveNORTH-CAROLINA472024
AndersonSOUTH-CAROLINA472018
MonticelloNORTH-CAROLINA462024
OstwaltNORTH-CAROLINA462024
Brandy StationVIRGINIA452024
SheffieldNORTH-CAROLINA442024
Great FallsVIRGINIA441978
MetasvilleGEORGIA432000
ClimaxNORTH-CAROLINA422024
Upper XrdsMARYLAND402008
CampobelloSOUTH-CAROLINA402024

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