BirdAnalyst
Species · BCR 23 · BBS 2025 Release · 1966–2024

Eastern Whip-poor-will In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionAerial insectivores

Eastern Whip-poor-will in Prairie Hardwood Transition has declined: down 44% on the route-weighted index since 1968.

-44%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 →
50Routes 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 →
57YearsYears 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 Eastern Whip-poor-will in Prairie Hardwood Transition. See the full index history below.

Eastern Whip-poor-will In Prairie Hardwood Transition Population Forecast

If the recent trend holds, Eastern Whip-poor-will in Prairie Hardwood Transition is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.09). A 5-year backtest shows a typical error of ±44.9%, with 100% of held-out values landing inside the 95% band.

n/aChange 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 →
0.01Projected 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 →
0.00–0.0995% 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 →
±44.9%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, Eastern Whip-poor-will in Prairie Hardwood Transition is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.09). A 5-year backtest shows a typical error of ±44.9%, 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 →
20250.020.000.09
20260.010.000.09
20270.010.000.09
20280.010.000.09
20290.010.000.09

Routes In Prairie Hardwood Transition

Routes recording Eastern Whip-poor-will in Prairie Hardwood Transition.
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 →
Allegan WmaMICHIGAN42015
South BendINDIANA31976
PrincetonWISCONSIN31991
Big Blue LkMICHIGAN21995
BravoMICHIGAN22005
JuniataMICHIGAN21970
MatherWISCONSIN21994
ClintonvilleWISCONSIN22008
Buena VistaWISCONSIN22024
KnoxINDIANA11984
MiddleburyINDIANA12019
Indiana DuneINDIANA12018
FestinaIOWA11992
ScottvilleMICHIGAN11983
MottvilleMICHIGAN11971
No BradleyMICHIGAN11974
WaldenburgMICHIGAN11993
Chippewa Lk.MICHIGAN11997
AlmenaMICHIGAN11993
Money CreekMINNESOTA11993
PrincetonMINNESOTA11997
CaledoniaMINNESOTA11995
Caledonia 2MINNESOTA12022
Sherburne NrMINNESOTA12017
Whitewater 2MINNESOTA12015

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