Species · Colorado · BBS 2025 Release · 1966–2024
Baltimore Oriole Population Trend in Colorado
Baltimore Oriole in Colorado has fallen sharply: down 74% on the route-weighted index since 1979.
-74%Since 1979
7Routes In State
19Years
Notable Baltimore Oriole Trends in Colorado
long arc declinecomputed index
Baltimore Oriole has fallen sharply in Colorado: down 74% on the route-weighted index since 1979.
Baltimore Oriole Population Forecast in Colorado
If the recent trend holds, Baltimore Oriole in Colorado is projected to stay roughly flat through 2026, near 0.00 (95% range 0.00–0.07). A 5-year backtest shows a typical error of ±161.3%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2026
0.00Projected 2026 index
0.00–0.0795% range
±161.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2022 | 0.00 | 0.00 | 0.07 |
| 2023 | 0.00 | 0.00 | 0.07 |
| 2024 | 0.00 | 0.00 | 0.07 |
| 2025 | 0.00 | 0.00 | 0.07 |
| 2026 | 0.00 | 0.00 | 0.07 |
Baltimore Oriole Survey Routes in Colorado
| Amherst | 3 | 2021 | 2008 |
| Pinneo | 2 | 1979 | 1979 |
| Julesburg | 1 | 2021 | 2002 |
| Lamar | 1 | 1981 | 1978 |
| Villegreen | 1 | 1996 | 1996 |
| Burlington | 1 | 2004 | 2004 |
| Two Buttes | 1 | 1990 | 1973 |
Baltimore Oriole Population Trend in Other States
alabamaarkansascaliforniaconnecticutdelawaregeorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.