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

Eastern Whip-poor-will In Piedmont

All regionsPiedmontAerial insectivores

Eastern Whip-poor-will in Piedmont has fallen sharply: down 68% on the route-weighted index since 1968.

-68%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 →
98Routes 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 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 68% 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 71% by 2029 — from 0.11 in 2024 to a central estimate of 0.03 (95% range 0.00–0.36). A 5-year backtest shows a typical error of ±31%, with 100% of held-out values landing inside the 95% band.

-71%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 →
0.03Projected 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 →
0.00–0.3695% 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 →
±31%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 71% by 2029 — from 0.11 in 2024 to a central estimate of 0.03 (95% range 0.00–0.36). A 5-year backtest shows a typical error of ±31%, 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 →
20250.090.000.42
20260.070.000.40
20270.060.000.39
20280.050.000.37
20290.030.000.36

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
JoannaSOUTH-CAROLINA42006
Cauthens XrdSOUTH-CAROLINA42019
ForsythGEORGIA32018
Carrs StationGEORGIA32023
TheodoreMARYLAND32002
Uwharrie NfNORTH-CAROLINA32000
Boiling SpgsSOUTH-CAROLINA31979
Plum BranchSOUTH-CAROLINA32024
BlacksburgSOUTH-CAROLINA32007
Owings 2SOUTH-CAROLINA32008
HollonvilleGEORGIA21994
FairplayGEORGIA21990
RutledgeGEORGIA22008
WhitesburgGEORGIA22017
Curry HillGEORGIA22019
Rock BranchGEORGIA22012
Sharon 2GEORGIA22024
Piedmont NwrGEORGIA22002
BiscoeNORTH-CAROLINA22009
BullockNORTH-CAROLINA22022
WhitmireSOUTH-CAROLINA22022
ProsperitySOUTH-CAROLINA22006
ChesneeSOUTH-CAROLINA22003

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