BirdAnalyst
Species · BCR 19 · BBS 2025 Release · 1966–2024

Baltimore Oriole In Central Mixed Grass Prairie

All regionsCentral Mixed Grass PrairieGeneralists

Baltimore Oriole in Central Mixed Grass Prairie has declined: down 28% on the route-weighted index since 1969.

-28%Since 1969TrendPercent 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 →
104Routes 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 →
57YearsYears 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 →

No notable trend signals for Baltimore Oriole in Central Mixed Grass Prairie. See the full index history below.

Forecast

If the recent trend holds, Baltimore Oriole in Central Mixed Grass Prairie is projected to rise about 18% by 2029 — from 5.6 in 2024 to a central estimate of 6.6 (95% range 3.7–9.5). A 5-year backtest shows a typical error of ±14.8%, with 100% of held-out values landing inside the 95% band.

+18%Change 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 →
6.6Projected 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 →
3.7–9.595% 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 →
±14.8%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 Central Mixed Grass Prairie is projected to rise about 18% by 2029 — from 5.6 in 2024 to a central estimate of 6.6 (95% range 3.7–9.5). A 5-year backtest shows a typical error of ±14.8%, with 100% of held-out values landing inside the 95% band.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 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 →
20256.83.99.6
20266.73.99.6
20276.73.89.5
20286.63.89.5
20296.63.79.5

Routes In Central Mixed Grass Prairie

Routes recording Baltimore Oriole in Central Mixed Grass Prairie.
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 →
CovertKANSAS672024
KanopolisKANSAS552024
BelvidereNEBRASKA252024
BerwynNEBRASKA232010
HamptonNEBRASKA232024
GrayKANSAS222019
LibertyNEBRASKA222003
St JohnKANSAS212019
LoganKANSAS212022
Ash ValleyKANSAS212019
Liberty 2NEBRASKA212007
Red CloudNEBRASKA212024
SolomonKANSAS202019
BradyNEBRASKA192024
ChapmanKANSAS181981
Beloit 2KANSAS182018
BoelusNEBRASKA182022
MinneapolisKANSAS172019
HodgesKANSAS172014
SurpriseNEBRASKA172024
PhillipsburgKANSAS162022
JewellKANSAS152005
BerwetKANSAS152024
Berwyn 2NEBRASKA152021
HanoverKANSAS142023

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