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Species · Pennsylvania · BBS 2025 Release · 1966–2024

Baltimore Oriole Population Trend in Pennsylvania

All statesGeneralists

Baltimore Oriole in Pennsylvania has declined: down 43% on the route-weighted index since 1968.

-43%Since 1968
134Routes In State
58Years

Notable Baltimore Oriole Trends in Pennsylvania

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

Baltimore Oriole Population Forecast in Pennsylvania

If the recent trend holds, Baltimore Oriole in Pennsylvania is projected to rise about 64% by 2029 — from 2.5 in 2024 to a central estimate of 4.1 (95% range 2.3–5.9). A 5-year backtest shows a typical error of ±41.8%, with 80% of held-out values landing inside the 95% band.

+64%Change by 2029
4.1Projected 2029 index
2.3–5.995% range
±41.8%Backtest error
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 index95% low95% high
20254.32.56.0
20264.22.56.0
20274.22.46.0
20284.22.45.9
20294.12.35.9

Baltimore Oriole Survey Routes in Pennsylvania

Routes recording Baltimore Oriole in Pennsylvania.
Harmonsburg1820231966
Collegeville1620231971
Big Flat1519811966
Waller1220241971
Beaver1220231969
West Grove1219961966
Poyntelle1120241969
Sardis819741967
Margaret820241969
Geeseytown820241987
Ryde820051968
Peru Mills820241966
Peters Mt819941972
Drehersville 2820232000
Betula720221973
Mawr Glen720241966
Millville720241969
Honesdale720241972
Starlight719991970
Ltl Pine Cr720241990
Laurel Hill720241979
Wyalusing720231985
Roulette620211970
Logue620221970
Ravensburg619791966

Baltimore Oriole Population Trend in Other States

alabamaarkansascaliforniacoloradoconnecticutdelawaregeorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

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