BirdAnalyst
Species · Iowa · BBS 2025 Release · 1966–2024

Eastern Whip-poor-will Population Trend in Iowa

All statesAerial insectivores

Eastern Whip-poor-will in Iowa has surged: up 349% on the route-weighted index since 1971.

+349%Since 1971
9Routes In State
33Years

Notable Eastern Whip-poor-will Trends in Iowa

long arc increasecomputed index

Eastern Whip-poor-will has surged in Iowa: up 349% on the route-weighted index since 1971.

Eastern Whip-poor-will Population Forecast in Iowa

If the recent trend holds, Eastern Whip-poor-will in Iowa is projected to stay roughly flat through 2015, near 0.18 (95% range 0.03–0.33). A 5-year backtest shows a typical error of ±81.3%, with 60% of held-out values landing inside the 95% band.

n/aChange by 2015
0.18Projected 2015 index
0.03–0.3395% range
±81.3%Backtest error
19692015
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20110.170.020.32
20120.170.020.33
20130.180.030.33
20140.180.030.33
20150.180.030.33

Eastern Whip-poor-will Survey Routes in Iowa

Routes recording Eastern Whip-poor-will in Iowa.
Exline220061974
Red Rock219921979
Mt Hamill119811981
Melrose120101976
Bedford119711971
College Spgs119701970
Washington119821982
Maquoketa119731973
Festina119921969

Eastern Whip-poor-will Population Trend in Other States

alabamaarkansasconnecticutdelawaregeorgiaillinoisindianakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsin

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