BirdAnalyst
Species · BCR 12 · BBS 2025 Release · 1966–2024

Eastern Whip-poor-will In Boreal Hardwood Transition

All regionsBoreal Hardwood TransitionAerial insectivores

Eastern Whip-poor-will in Boreal Hardwood Transition has edged up: up 24% on the route-weighted index since 1968.

+24%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 →
67Routes 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 Eastern Whip-poor-will in Boreal Hardwood Transition. See the full index history below.

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

If the recent trend holds, Eastern Whip-poor-will in Boreal Hardwood Transition is projected to fall about 33% by 2029 — from 0.16 in 2024 to a central estimate of 0.11 (95% range 0.00–0.28). A 5-year backtest shows a typical error of ±52.7%, with 100% of held-out values landing inside the 95% band.

-33%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 →
0.11Projected 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 →
0.00–0.2895% 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 →
±52.7%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 Boreal Hardwood Transition is projected to fall about 33% by 2029 — from 0.16 in 2024 to a central estimate of 0.11 (95% range 0.00–0.28). A 5-year backtest shows a typical error of ±52.7%, 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 →
20250.120.000.29
20260.120.000.29
20270.110.000.29
20280.110.000.29
20290.110.000.28

Routes In Boreal Hardwood Transition

Routes recording Eastern Whip-poor-will in Boreal 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 →
Mille LacsMINNESOTA41998
RacoMICHIGAN32024
ConoverWISCONSIN32024
CunardMICHIGAN22021
IsabellaMICHIGAN21998
Red OakMICHIGAN22011
CathroMICHIGAN21980
Betchler LksMICHIGAN22024
SidnawMICHIGAN22023
Grand ViewWISCONSIN22011
Union TwpWISCONSIN22021
Popple RiverWISCONSIN22021
CrandonWISCONSIN21993
MareniscoMICHIGAN12000
Ned LakeMICHIGAN12022
Crystal FlsMICHIGAN12014
Gibbs CityMICHIGAN12024
Brocky LakeMICHIGAN12023
WilsonMICHIGAN12002
CreightonMICHIGAN12012
MuskallongeMICHIGAN12017
TahquamenonMICHIGAN11978
GilchristMICHIGAN12021
Lake CityMICHIGAN11996
IronsMICHIGAN11989

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