Species · Texas · BBS 2025 Release · 1966–2024
Purple Gallinule Population Trend in Texas
Purple Gallinule in Texas has declined: down 41% on the route-weighted index since 1970.
-41%Since 1970
19Routes In State
45Years
Notable Purple Gallinule Trends in Texas
No notable trend signals for Purple Gallinule in Texas. See the full index history below.
Purple Gallinule Population Forecast in Texas
If the recent trend holds, Purple Gallinule in Texas is projected to fall about 69% by 2029 — from 0.06 in 2024 to a central estimate of 0.02 (95% range 0.00–0.16). A 5-year backtest shows a typical error of ±77.2%, with 100% of held-out values landing inside the 95% band.
-69%Change by 2029
0.02Projected 2029 index
0.00–0.1695% range
±77.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.02 | 0.00 | 0.16 |
| 2026 | 0.02 | 0.00 | 0.16 |
| 2027 | 0.02 | 0.00 | 0.16 |
| 2028 | 0.02 | 0.00 | 0.16 |
| 2029 | 0.02 | 0.00 | 0.16 |
Purple Gallinule Survey Routes in Texas
| Winnie | 6 | 2024 | 1969 |
| Massey Lake | 2 | 2005 | 2005 |
| Chinquapin | 2 | 2006 | 2003 |
| Oyster Lake | 2 | 2006 | 1997 |
| Port Acres | 2 | 2024 | 2001 |
| Raymondville | 2 | 1981 | 1969 |
| Kingsville | 1 | 1993 | 1992 |
| Hinkles Fer | 1 | 1992 | 1982 |
| Indianola | 1 | 2023 | 1967 |
| Loyola Beach 2 | 1 | 2016 | 2010 |
| Stowell | 1 | 2005 | 1977 |
| Danbury | 1 | 1981 | 1981 |
| Katy | 1 | 2023 | 1971 |
| Rock Island | 1 | 2015 | 1967 |
| Moon Lake 2 | 1 | 2021 | 2021 |
| Town Bluff | 1 | 2004 | 2003 |
| Livingston | 1 | 2024 | 1984 |
| Progreso | 1 | 1995 | 1995 |
| Moon Lake | 1 | 2007 | 1994 |
Purple Gallinule Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.