Species · BCR 18 · BBS 2025 Release · 1966–2024
Bank Swallow In Shortgrass Prairie
Bank Swallow in Shortgrass Prairie has collapsed: down 97% on the route-weighted index since 1969.
-97%Since 1969
27Routes In Region
45Years
Notable Signals
long arc declinecomputed index
Bank Swallow has collapsed in Shortgrass Prairie: down 97% on the route-weighted index since 1969.
Forecast
If the recent trend holds, Bank Swallow in Shortgrass Prairie is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±924.5%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.00Projected 2029 index
0.00–1.495% range
±924.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 1.4 |
| 2026 | 0.00 | 0.00 | 1.4 |
| 2027 | 0.00 | 0.00 | 1.4 |
| 2028 | 0.00 | 0.00 | 1.4 |
| 2029 | 0.00 | 0.00 | 1.4 |
Routes In Shortgrass Prairie
| Murray Lake | NEBRASKA | 14 | 2013 |
| Wallace | KANSAS | 13 | 2003 |
| Fort Morgan | COLORADO | 12 | 2021 |
| Prospect Val | COLORADO | 11 | 1992 |
| Lamar | COLORADO | 10 | 1995 |
| Arsenal | COLORADO | 10 | 2015 |
| Dalton | NEBRASKA | 10 | 1987 |
| Hardesty | OKLAHOMA | 10 | 2006 |
| Clear Lake | OKLAHOMA | 6 | 2000 |
| Agate 2 | NEBRASKA | 5 | 2022 |
| Yoder | WYOMING | 5 | 1968 |
| Two Buttes | COLORADO | 3 | 1995 |
| Paxton | NEBRASKA | 3 | 1992 |
| Pine Bluff | WYOMING | 3 | 1992 |
| Lakin | KANSAS | 2 | 2001 |
| Benkelman | NEBRASKA | 2 | 2008 |
| Cooley Lake | NEW-MEXICO | 2 | 1995 |
| Rosebud | NEW-MEXICO | 2 | 2003 |
| Mica Butte | COLORADO | 1 | 1968 |
| Hudson | COLORADO | 1 | 2024 |
| Adams Co. | COLORADO | 1 | 1995 |
| Agate | NEBRASKA | 1 | 1995 |
| Marsland | NEBRASKA | 1 | 2018 |
| Felt | OKLAHOMA | 1 | 2007 |
| Keyes | OKLAHOMA | 1 | 2008 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.