Species · BCR 36 · BBS 2025 Release · 1966–2024
Blue-gray Gnatcatcher In Tamaulipan Brushlands
Blue-gray Gnatcatcher in Tamaulipan Brushlands has surged: up 195% on the route-weighted index since 1972.
+195%Since 1972
21Routes In Region
36Years
Notable Signals
long arc increasecomputed index
Blue-gray Gnatcatcher has surged in Tamaulipan Brushlands: up 195% on the route-weighted index since 1972.
Forecast
If the recent trend holds, Blue-gray Gnatcatcher in Tamaulipan Brushlands is projected to rise about 291% by 2029 — from 0.17 in 2024 to a central estimate of 0.65 (95% range 0.00–1.5). A 5-year backtest shows a typical error of ±469.8%, with 100% of held-out values landing inside the 95% band.
+291%Change by 2029
0.65Projected 2029 index
0.00–1.595% range
±469.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.62 | 0.00 | 1.5 |
| 2026 | 0.63 | 0.00 | 1.5 |
| 2027 | 0.64 | 0.00 | 1.5 |
| 2028 | 0.65 | 0.00 | 1.5 |
| 2029 | 0.65 | 0.00 | 1.5 |
Routes In Tamaulipan Brushlands
| Catarina | TEXAS | 8 | 2007 |
| Sejita | TEXAS | 5 | 2023 |
| Millett | TEXAS | 4 | 2012 |
| Agua Nueva | TEXAS | 3 | 2023 |
| La Pryor | TEXAS | 3 | 2003 |
| Randado | TEXAS | 2 | 2014 |
| Encinal | TEXAS | 2 | 2008 |
| Catarina 2 | TEXAS | 2 | 2013 |
| Laredo | TEXAS | 2 | 2016 |
| Pedro Creek | TEXAS | 2 | 2003 |
| Cavasara Cr. | TEXAS | 2 | 2012 |
| Rachal | TEXAS | 1 | 2023 |
| Kingsville | TEXAS | 1 | 2004 |
| Mirando City | TEXAS | 1 | 2014 |
| George West | TEXAS | 1 | 2013 |
| Hondo | TEXAS | 1 | 2024 |
| El Indio | TEXAS | 1 | 2007 |
| Raymondville | TEXAS | 1 | 2024 |
| Dilley | TEXAS | 1 | 2023 |
| Guerra | TEXAS | 1 | 2010 |
| Millett 2 | TEXAS | 1 | 2022 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.