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Species · Indiana · BBS 2026 Release · 1966–2025

Baltimore Oriole Population Trend in Indiana

All statesForest birds

Baltimore Oriole in Indiana has surged: up 137% on the route-weighted index since 1968.

+137%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 →
68Routes 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 →
59YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Baltimore Oriole Trends in IndianaNotable 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 →

Baltimore Oriole has surged in Indiana: up 137% on the route-weighted index since 1968.

Baltimore Oriole Population Forecast in Indiana

If the recent trend holds, Baltimore Oriole in Indiana is projected to rise about 88% by 2030 — from 1.8 in 2025 to a central estimate of 3.5 (95% range 1.7–5.3). A 5-year backtest shows a typical error of ±58.6%, with 80% of held-out values landing inside the 95% band.

+88%Change by 2030TrendPercent 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 →
3.5Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
1.7–5.395% 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, Baltimore Oriole in Indiana is projected to rise about 88% by 2030 — from 1.8 in 2025 to a central estimate of 3.5 (95% range 1.7–5.3). A 5-year backtest shows a typical error of ±58.6%, with 80% of held-out values landing inside the 95% band.19662030
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 →
20263.41.65.2
20273.41.65.2
20283.51.75.2
20293.51.75.3
20303.51.75.3

Baltimore Oriole Survey Routes in Indiana

Routes recording Baltimore Oriole in Indiana.
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 →
Columbia Cty1420241982
Packertown1420041967
Packertown 2920252005
Knox820251981
Ellis820231967
Brazil820251966
Kewanna620221981
Tipton619921966
Berne620251969
Laporte620231999
Portage620042000
Muncie519971981
Friendswood520241986
Spencer520241971
Cumback520141966
Middlebury420251989
Wabash420251981
Wallace420242000
Monticello320251981
Thorntown320251982
Pimento320251983
Jamestown320251986
Clear Spring320241982
Scottsburg320251982
Kankakee Sands320252000

Baltimore Oriole Population Trend in Other States

alabamaarkansascaliforniacoloradoconnecticutdelawaregeorgiaillinoisiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.