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

Barred Owl Population Trend in Ohio

All statesGeneralists

Barred Owl in Ohio has surged: up 144% on the route-weighted index since 1970.

+144%Since 1970TrendPercent 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 →
40Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
43YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Barred Owl Trends in OhioNotable 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 increasecomputed 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 →

Barred Owl has surged in Ohio: up 144% on the route-weighted index since 1970.

Barred Owl Population Forecast in Ohio

If the recent trend holds, Barred Owl in Ohio is projected to fall about 30% by 2029 — from 0.16 in 2024 to a central estimate of 0.11 (95% range 0.01–0.21). A 5-year backtest shows a typical error of ±49.4%, with 60% of held-out values landing inside the 95% band.

-30%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 →
0.01–0.2195% 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 →
±49.4%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, Barred Owl in Ohio is projected to fall about 30% by 2029 — from 0.16 in 2024 to a central estimate of 0.11 (95% range 0.01–0.21). A 5-year backtest shows a typical error of ±49.4%, with 60% 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 →
20250.110.010.20
20260.110.010.21
20270.110.010.21
20280.110.010.21
20290.110.010.21

Barred Owl Survey Routes in Ohio

Routes recording Barred Owl in Ohio.
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 →
Hiram420152015
Wayne N.F.320241999
Herner Crns320231988
Rome320171973
Zaleski S.F.220242000
Pittsfield220212012
Birmingham220232023
New Somerset219771977
Harveysburg219881968
Lockport119701970
Bloomville120222009
Tar Hollow120011995
Scioto Trail120051999
Tick Ridge120162002
Mohican S.F.120161994
Bismark119841984
Ashley119931993
Wayland120032003
Strongsville119661966
Lenox119811972
Cosmos120192019
Kings Creek120092001
Kenton120051984
Harveysburg 2120212021
Port William120112011

Barred Owl Population Trend in Other States

alabamaalaskaarkansascaliforniaconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinaoklahomaoregonpennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawashingtonwest-virginiawisconsin

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