Species · BCR 17 · BBS 2025 Release · 1966–2024
Bank Swallow In Badlands and Prairies
Bank Swallow in Badlands and Prairies has held roughly steady: up 1% on the route-weighted index since 1969.
+1%Since 1969
77Routes In Region
57Years
Notable Signals
No notable trend signals for Bank Swallow in Badlands and Prairies. See the full index history below.
Forecast
If the recent trend holds, Bank Swallow in Badlands and Prairies is projected to rise about 59% by 2029 — from 1.5 in 2024 to a central estimate of 2.4 (95% range 0.46–4.3). A 5-year backtest shows a typical error of ±44.9%, with 80% of held-out values landing inside the 95% band.
+59%Change by 2029
2.4Projected 2029 index
0.46–4.395% range
±44.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 2.3 | 0.40 | 4.2 |
| 2026 | 2.3 | 0.41 | 4.3 |
| 2027 | 2.4 | 0.43 | 4.3 |
| 2028 | 2.4 | 0.45 | 4.3 |
| 2029 | 2.4 | 0.46 | 4.3 |
Routes In Badlands and Prairies
| Savage | MONTANA | 96 | 2021 |
| Bentley | NORTH-DAKOTA | 66 | 2024 |
| Dunn Center | NORTH-DAKOTA | 20 | 2022 |
| Glen Ullin | NORTH-DAKOTA | 16 | 2022 |
| Marcus | SOUTH-DAKOTA | 16 | 2012 |
| Eagle Butte | SOUTH-DAKOTA | 15 | 2006 |
| Carson | NORTH-DAKOTA | 14 | 2021 |
| Mayoworth | WYOMING | 13 | 2024 |
| Natrona | WYOMING | 12 | 1992 |
| Promise | SOUTH-DAKOTA | 11 | 2015 |
| Ft Yates | NORTH-DAKOTA | 10 | 2001 |
| Seely | WYOMING | 10 | 1995 |
| Gvnt Valley | WYOMING | 10 | 2017 |
| Gorham | NORTH-DAKOTA | 9 | 1996 |
| Arvada | WYOMING | 8 | 2024 |
| Powderville | MONTANA | 7 | 2017 |
| Sundance | WYOMING | 7 | 2009 |
| Hayes | SOUTH-DAKOTA | 6 | 2022 |
| Riverview | WYOMING | 6 | 1997 |
| Circle | MONTANA | 5 | 2017 |
| Badlands | SOUTH-DAKOTA | 5 | 2012 |
| Forsyth | MONTANA | 4 | 2023 |
| St Xavier | MONTANA | 4 | 2006 |
| Cabin Creek | MONTANA | 4 | 2024 |
| Harding | SOUTH-DAKOTA | 4 | 2012 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.