Species · BCR 37 · BBS 2025 Release · 1966–2024
Mallard In Gulf Coastal Prairie
Mallard in Gulf Coastal Prairie has surged: up 236% on the route-weighted index since 1985.
+236%Since 1985
10Routes In Region
13Years
Notable Signals
long arc increasecomputed index
Mallard has surged in Gulf Coastal Prairie: up 236% on the route-weighted index since 1985.
Routes In Gulf Coastal Prairie
| Glencoe | LOUISIANA | 20 | 2017 |
| Richard | LOUISIANA | 8 | 2010 |
| Katy | TEXAS | 5 | 2010 |
| Port Acres | TEXAS | 4 | 2015 |
| Winnie | TEXAS | 3 | 1988 |
| Maurice | LOUISIANA | 1 | 2001 |
| Woodlawn | LOUISIANA | 1 | 2017 |
| Indianola | TEXAS | 1 | 1971 |
| Rock Island | TEXAS | 1 | 2018 |
| Chinquapin | TEXAS | 1 | 2023 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.