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Species · BCR 26 · BBS 2026 Release · 1966–2025

Baltimore Oriole In Mississippi Alluvial Valley

All regionsMississippi Alluvial ValleyForest birds

Baltimore Oriole in Mississippi Alluvial Valley has fallen sharply: down 61% on the route-weighted index since 1968.

-61%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 →
59Routes In RegionSurvey 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 SignalsNotable 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 declinecomputed 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 fallen sharply in Mississippi Alluvial Valley: down 61% on the route-weighted index since 1968.

Baltimore Oriole In Mississippi Alluvial Valley Population Forecast

If the recent trend holds, Baltimore Oriole in Mississippi Alluvial Valley is projected to fall about 71% by 2030 — from 1.8 in 2025 to a central estimate of 0.52 (95% range 0.00–2.2). A 5-year backtest shows a typical error of ±59.1%, with 100% of held-out values landing inside the 95% band.

-71%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 →
0.52Projected 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 →
0.00–2.295% 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 →
±59.1%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 Mississippi Alluvial Valley is projected to fall about 71% by 2030 — from 1.8 in 2025 to a central estimate of 0.52 (95% range 0.00–2.2). A 5-year backtest shows a typical error of ±59.1%, with 100% 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 →
20260.740.002.4
20270.680.002.3
20280.630.002.3
20290.570.002.2
20300.520.002.2

Routes In Mississippi Alluvial Valley

Routes recording Baltimore Oriole in Mississippi Alluvial Valley.
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 →
ShawLOUISIANA172024
EnglandARKANSAS142025
River RoadLOUISIANA82024
DundeeMISSISSIPPI82021
WilsonARKANSAS72025
MayflowerLOUISIANA72025
Eagle LakeMISSISSIPPI72025
BardwellKENTUCKY62003
GillettARKANSAS52025
KelsoARKANSAS52016
TchulaMISSISSIPPI51975
PawpawTENNESSEE52012
South BendARKANSAS42025
KennettMISSOURI42025
WhittonARKANSAS31991
AugustaARKANSAS32001
Augusta 2ARKANSAS32016
WintervilleMISSISSIPPI32009
TallahatchieMISSISSIPPI32023
DeventerMISSOURI32025
TiptonvilleTENNESSEE32025
EudoraARKANSAS21995
HarrisburgARKANSAS22019
Morgan CityLOUISIANA21977
FloydLOUISIANA22019

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