Species · Texas · BBS 2025 Release · 1966–2024
White-throated Swift Population Trend in Texas
White-throated Swift in Texas has collapsed: down 94% on the route-weighted index since 1970.
-94%Since 1970
14Routes In State
39Years
Notable White-throated Swift Trends in Texas
long arc declinecomputed index
White-throated Swift has collapsed in Texas: down 94% on the route-weighted index since 1970.
White-throated Swift Population Forecast in Texas
If the recent trend holds, White-throated Swift in Texas is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.22). A 5-year backtest shows a typical error of ±162.3%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.01Projected 2029 index
0.00–0.2295% range
±162.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.02 | 0.00 | 0.23 |
| 2026 | 0.02 | 0.00 | 0.23 |
| 2027 | 0.01 | 0.00 | 0.23 |
| 2028 | 0.01 | 0.00 | 0.22 |
| 2029 | 0.01 | 0.00 | 0.22 |
White-throated Swift Survey Routes in Texas
| Bear Mtn | 21 | 2011 | 1988 |
| Hot Springs | 9 | 2006 | 1998 |
| Slaughter | 5 | 1999 | 1968 |
| Valentine | 5 | 1987 | 1969 |
| Sierra Blanc | 2 | 2005 | 1999 |
| Delaware Crk | 2 | 1971 | 1971 |
| Salt Flat | 1 | 2006 | 2003 |
| Chisos Basin | 1 | 2024 | 1995 |
| Toyahvale | 1 | 1998 | 1998 |
| Canutillo | 1 | 2009 | 1994 |
| Black Gap | 1 | 2011 | 2011 |
| Casa Piedra | 1 | 1992 | 1992 |
| Cornudas | 1 | 1970 | 1970 |
| Castolon | 1 | 2024 | 1998 |
White-throated Swift Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.