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

Baltimore Oriole Population Trend in Iowa

All statesGeneralists

Baltimore Oriole in Iowa has edged down: down 25% on the route-weighted index since 1969.

-25%Since 1969
39Routes In State
57Years

Notable Baltimore Oriole Trends in Iowa

No notable trend signals for Baltimore Oriole in Iowa. See the full index history below.

Baltimore Oriole Population Forecast in Iowa

If the recent trend holds, Baltimore Oriole in Iowa is projected to rise about 25% by 2029 — from 3.6 in 2024 to a central estimate of 4.5 (95% range 2.7–6.4). A 5-year backtest shows a typical error of ±29.3%, with 100% of held-out values landing inside the 95% band.

+25%Change by 2029
4.5Projected 2029 index
2.7–6.495% range
±29.3%Backtest error
19672029
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
20254.62.76.4
20264.62.76.4
20274.52.76.4
20284.52.76.4
20294.52.76.4

Baltimore Oriole Survey Routes in Iowa

Routes recording Baltimore Oriole in Iowa.
Washta2020141967
College Spgs 21720232005
Mt Hamill1320241967
College Spgs1320041967
Panther1120241967
Alice1019991967
Zearing1019951967
Hudson920221967
Washington820241967
Bedford720181969
Red Rock720241968
Clare720191973
Exline620241974
Brooklyn520221967
Maquoketa520241967
Scranton520241967
Mccallsburg520241996
Cedar Valley419971967
Wales320181967
Lafayette320242003
Melrose220241974
Bryant220241967
West Liberty220241968
Desmoines219791968
Kanawha220241967

Baltimore Oriole Population Trend in Other States

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

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