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Species · Ohio · BBS 2025 Release · 1966–2024

Blue-headed Vireo Population Trend in Ohio

All statesForest birds

Blue-headed Vireo in Ohio has increased: up 41% on the route-weighted index since 1992.

+41%Since 1992TrendPercent 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 →
11Routes 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 →
32YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Blue-headed Vireo 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 →

No notable trend signals for Blue-headed Vireo in Ohio. See the full index history below.

Blue-headed Vireo Population Forecast in Ohio

If the recent trend holds, Blue-headed Vireo in Ohio is projected to stay roughly flat through 2029, near 0.07 (95% range 0.00–0.14). A 5-year backtest shows a typical error of ±58.6%, 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 →
0.07Projected 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 →
0.00–0.1495% 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 →
±58.6%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, Blue-headed Vireo in Ohio is projected to stay roughly flat through 2029, near 0.07 (95% range 0.00–0.14). A 5-year backtest shows a typical error of ±58.6%, with 100% of held-out values landing inside the 95% band.19802029
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 →
20250.070.000.14
20260.070.000.14
20270.070.000.14
20280.070.000.14
20290.070.000.14

Blue-headed Vireo Survey Routes in Ohio

Routes recording Blue-headed Vireo 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 →
Shawnee S.F. 2420182001
Shawnee S.F.220001996
Wayne N.F.119981998
Zaleski S.F.120232023
Tick Ridge120172017
Mohican S.F.120241992
Newcomerstwn119801980
Middlefield119931993
Strongsville119871987
Dell120192006
Smithfield120122012

Blue-headed Vireo Population Trend in Other States

alabamaconnecticutgeorgiakentuckymainemarylandmassachusettsmichiganminnesotanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotapennsylvaniarhode-islandsouth-carolinatennesseevermontvirginiawest-virginiawisconsin

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