Species · BCR 22 · BBS 2025 Release · 1966–2024
Blue-gray Gnatcatcher In Eastern Tallgrass Prairie
Blue-gray Gnatcatcher in Eastern Tallgrass Prairie has surged: up 294% on the route-weighted index since 1968.
+294%Since 1968
231Routes In Region
58Years
Notable Signals
long arc increasecomputed index
Blue-gray Gnatcatcher has surged in Eastern Tallgrass Prairie: up 294% on the route-weighted index since 1968.
Forecast
If the recent trend holds, Blue-gray Gnatcatcher in Eastern Tallgrass Prairie is projected to rise about 15% by 2029 — from 1.6 in 2024 to a central estimate of 1.8 (95% range 1.5–2.1). A 5-year backtest shows a typical error of ±10.5%, with 80% of held-out values landing inside the 95% band.
+15%Change by 2029
1.8Projected 2029 index
1.5–2.195% range
±10.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 1.7 | 1.4 | 2.0 |
| 2026 | 1.7 | 1.4 | 2.0 |
| 2027 | 1.8 | 1.4 | 2.1 |
| 2028 | 1.8 | 1.5 | 2.1 |
| 2029 | 1.8 | 1.5 | 2.1 |
Routes In Eastern Tallgrass Prairie
| Moselle | MISSOURI | 20 | 2024 |
| Belleview | ILLINOIS | 16 | 2024 |
| House Springs | MISSOURI | 15 | 2024 |
| Gildehouse | MISSOURI | 13 | 1989 |
| Robinson | ILLINOIS | 12 | 2023 |
| Wayne | ILLINOIS | 11 | 2023 |
| Witts Station | INDIANA | 11 | 2024 |
| Filley | MISSOURI | 11 | 2024 |
| Mt Vernon | ILLINOIS | 9 | 2024 |
| Wallace | INDIANA | 9 | 2024 |
| Wreford | KANSAS | 9 | 2024 |
| Frankford | MISSOURI | 9 | 2024 |
| Columbia | ILLINOIS | 8 | 2023 |
| Grape Creek | ILLINOIS | 7 | 2024 |
| Le Loup | KANSAS | 7 | 2021 |
| Kirksville | MISSOURI | 7 | 2017 |
| Harveysburg | OHIO | 7 | 1996 |
| W Carrollton | OHIO | 7 | 2015 |
| Martinsville | ILLINOIS | 6 | 2024 |
| Olsburg | KANSAS | 6 | 2024 |
| Danville | MISSOURI | 6 | 2024 |
| Ohio | MISSOURI | 6 | 2024 |
| Gerald | MISSOURI | 6 | 2024 |
| Milford | MISSOURI | 6 | 2024 |
| Keetonville | OKLAHOMA | 6 | 2022 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.