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

Eastern Whip-poor-will In Piedmont

All regionsPiedmontAerial insectivores

Eastern Whip-poor-will in Piedmont has fallen sharply: down 70% on the route-weighted index since 1968.

-70%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 →
99Routes 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 declinecomputed 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 →

Eastern Whip-poor-will has fallen sharply in Piedmont: down 70% on the route-weighted index since 1968.

Eastern Whip-poor-will In Piedmont Population Forecast

If the recent trend holds, Eastern Whip-poor-will in Piedmont is projected to fall about 86% by 2030 — from 0.16 in 2025 to a central estimate of 0.02 (95% range 0.00–0.35). A 5-year backtest shows a typical error of ±34.5%, with 100% of held-out values landing inside the 95% band.

-86%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 →
0.02Projected 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 →
0.00–0.3595% 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 →
±34.5%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, Eastern Whip-poor-will in Piedmont is projected to fall about 86% by 2030 — from 0.16 in 2025 to a central estimate of 0.02 (95% range 0.00–0.35). A 5-year backtest shows a typical error of ±34.5%, 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 →
20260.080.000.41
20270.070.000.39
20280.050.000.38
20290.040.000.36
20300.020.000.35

Routes In Piedmont

Routes recording Eastern Whip-poor-will 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 →
GrovetownGEORGIA71991
OwingsSOUTH-CAROLINA52000
BullockNORTH-CAROLINA42025
JoannaSOUTH-CAROLINA42006
Cauthens XrdSOUTH-CAROLINA42019
ForsythGEORGIA32018
TheodoreMARYLAND32002
Uwharrie NfNORTH-CAROLINA32000
Boiling SpgsSOUTH-CAROLINA31979
Plum BranchSOUTH-CAROLINA32024
BlacksburgSOUTH-CAROLINA32007
Owings 2SOUTH-CAROLINA32008
HollonvilleGEORGIA21994
FairplayGEORGIA21990
RutledgeGEORGIA22008
WhitesburgGEORGIA22017
Curry HillGEORGIA22019
Rock BranchGEORGIA22012
Piedmont NwrGEORGIA22002
BiscoeNORTH-CAROLINA22009
WhitmireSOUTH-CAROLINA22022
GreenwoodSOUTH-CAROLINA22025
ProsperitySOUTH-CAROLINA22006
ChesneeSOUTH-CAROLINA22003
Big IslandVIRGINIA22024

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