Species · BCR 22 · BBS 2025 Release · 1966–2024
Sora In Eastern Tallgrass Prairie
Sora in Eastern Tallgrass Prairie has fallen sharply: down 59% on the route-weighted index since 1969.
-59%Since 1969
21Routes In Region
35Years
Notable Signals
No notable trend signals for Sora in Eastern Tallgrass Prairie. See the full index history below.
Forecast
If the recent trend holds, Sora in Eastern Tallgrass Prairie is projected to stay roughly flat through 2027, near 0.00 (95% range 0.00–0.03). A 5-year backtest shows a typical error of ±61.5%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2027
0.00Projected 2027 index
0.00–0.0395% range
±61.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2023 | 0.01 | 0.00 | 0.03 |
| 2024 | 0.01 | 0.00 | 0.03 |
| 2025 | 0.00 | 0.00 | 0.03 |
| 2026 | 0.00 | 0.00 | 0.03 |
| 2027 | 0.00 | 0.00 | 0.03 |
Routes In Eastern Tallgrass Prairie
| Cuba | INDIANA | 2 | 2021 |
| Richland | NEBRASKA | 2 | 2019 |
| Bartonville | ILLINOIS | 1 | 1973 |
| Clarksdale | ILLINOIS | 1 | 1981 |
| Troy Grove | ILLINOIS | 1 | 1996 |
| Seneca | ILLINOIS | 1 | 2015 |
| Keithsburg | ILLINOIS | 1 | 2010 |
| Sterling | ILLINOIS | 1 | 2019 |
| Eubanks | ILLINOIS | 1 | 2006 |
| Fairdale | ILLINOIS | 1 | 2019 |
| Kankakee Sands | INDIANA | 1 | 2022 |
| Exline | IOWA | 1 | 1992 |
| Hudson | IOWA | 1 | 1983 |
| Pierson | IOWA | 1 | 1969 |
| Sioux City | IOWA | 1 | 2011 |
| Olsburg | KANSAS | 1 | 2011 |
| Ash Creek | MINNESOTA | 1 | 1995 |
| Lakeville | MINNESOTA | 1 | 1992 |
| Austin | MINNESOTA | 1 | 2011 |
| Thurston | NEBRASKA | 1 | 1999 |
| Raymond | WISCONSIN | 1 | 2022 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.