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

Indigo Bunting In Piedmont

All regionsPiedmontGeneralists

Indigo Bunting in Piedmont has edged down: down 16% on the route-weighted index since 1968.

-16%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 →

No notable trend signals for Indigo Bunting in Piedmont. See the full index history below.

Indigo Bunting In Piedmont Population Forecast

If the recent trend holds, Indigo Bunting in Piedmont is projected to rise about 22% by 2029 — from 19 in 2024 to a central estimate of 23 (95% range 17–29). A 5-year backtest shows a typical error of ±24.2%, with 80% of held-out values landing inside the 95% band.

+22%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 →
23Projected 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 →
17–2995% 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 →
±24.2%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, Indigo Bunting in Piedmont is projected to rise about 22% by 2029 — from 19 in 2024 to a central estimate of 23 (95% range 17–29). A 5-year backtest shows a typical error of ±24.2%, with 80% 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 →
2025241830
2026241730
2027231730
2028231729
2029231729

Routes In Piedmont

Routes recording Indigo Bunting 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
Liberty CityALABAMA782011
FinchleyVIRGINIA602021
Ft Pickett SVIRGINIA591995
Stoney PointGEORGIA562007
MoranVIRGINIA562024
Salem XrdSOUTH-CAROLINA552019
Ft Pickett NVIRGINIA531995
WylliesburgVIRGINIA512019
FairplayGEORGIA481991
EarltonMARYLAND432024
ConcordVIRGINIA432024
Church RoadVIRGINIA412024
IjamsvilleMARYLAND382024
EdenNORTH-CAROLINA382024
MaxeysGEORGIA372024
SiloamNORTH-CAROLINA372024
MillervilleALABAMA362024
TrymeVIRGINIA362024
Big IslandVIRGINIA352024
EmmitsburgMARYLAND332024
CherryvilleNORTH-CAROLINA331968
MadisonNORTH-CAROLINA331985
OakboroNORTH-CAROLINA322024
BiscoeNORTH-CAROLINA322017

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