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

Chuck-will's-widow In Piedmont

All regionsPiedmontAerial insectivores

Chuck-will's-widow in Piedmont has edged down: down 13% on the route-weighted index since 1968.

-13%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 →
92Routes 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 →

No notable trend signals for Chuck-will's-widow in Piedmont. See the full index history below.

Chuck-will's-widow In Piedmont Population Forecast

If the recent trend holds, Chuck-will's-widow in Piedmont is projected to fall about 47% by 2030 — from 0.56 in 2025 to a central estimate of 0.30 (95% range 0.00–0.65). A 5-year backtest shows a typical error of ±39.8%, with 100% of held-out values landing inside the 95% band.

-47%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 →
0.30Projected 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 →
0.00–0.6595% 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 →
±39.8%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, Chuck-will's-widow in Piedmont is projected to fall about 47% by 2030 — from 0.56 in 2025 to a central estimate of 0.30 (95% range 0.00–0.65). A 5-year backtest shows a typical error of ±39.8%, 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 →
20260.330.000.68
20270.320.000.67
20280.310.000.67
20290.300.000.66
20300.300.000.65

Routes In Piedmont

Routes recording Chuck-will's-widow 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 →
FairviewNORTH-CAROLINA102025
WhitmireSOUTH-CAROLINA92024
Liberty City 2ALABAMA62025
Plum BranchSOUTH-CAROLINA62025
Ft Pickett NVIRGINIA61995
ForsythGEORGIA42019
JordanNORTH-CAROLINA41991
Hulls XroadsNORTH-CAROLINA42002
RidgewaySOUTH-CAROLINA42021
AndersonSOUTH-CAROLINA42009
MillervilleALABAMA32024
LanettALABAMA32015
HollonvilleGEORGIA32003
FairplayGEORGIA31985
WashingtonGEORGIA32018
Curry HillGEORGIA32019
Little MtnSOUTH-CAROLINA31987
GreenwoodSOUTH-CAROLINA32025
Cauthens XrdSOUTH-CAROLINA32021
Liberty CityALABAMA22011
NixburgALABAMA21998
RutledgeGEORGIA22022
WhitesburgGEORGIA22025
RolandGEORGIA22023
Carrs StationGEORGIA22025

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