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Species · Texas · BBS 2025 Release · 1966–2024

Fulvous Whistling-Duck Population Trend in Texas

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Fulvous Whistling-Duck in Texas has increased: up 29% on the route-weighted index since 1969.

+29%Since 1969
32Routes In State
57Years

Notable Fulvous Whistling-Duck Trends in Texas

No notable trend signals for Fulvous Whistling-Duck in Texas. See the full index history below.

Fulvous Whistling-Duck Population Forecast in Texas

If the recent trend holds, Fulvous Whistling-Duck in Texas is projected to rise about 300% by 2029 — from 0.24 in 2024 to a central estimate of 0.96 (95% range 0.00–1.9). A 5-year backtest shows a typical error of ±108.8%, with 100% of held-out values landing inside the 95% band.

+300%Change by 2029
0.96Projected 2029 index
0.00–1.995% range
±108.8%Backtest error
19672029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.930.001.9
20260.940.001.9
20270.940.001.9
20280.950.001.9
20290.960.001.9

Fulvous Whistling-Duck Survey Routes in Texas

Routes recording Fulvous Whistling-Duck in Texas.
Loyola Beach 23820232010
Bayside2920032002
Progreso2420081995
Campbellton2120172017
Heidelberg2120232013
Rock Island1420231967
Bayside 21320041997
Winnie1120241979
Petronila1020191968
Goliad Prairie1020122011
Stowell1020211984
Kingsville820191979
Moon Lake 2620242019
Bayside 3620242005
Chinquapin520231999
Mount Zion420241994
Raymondville420241969
Hinkles Fer320102010
Loyola Beach320091994
Sejita320212010
Port Acres320241994
Indianola220231967
Danbury220181977
Katy220241968
Oyster Lake220221998

Fulvous Whistling-Duck Population Trend in Other States

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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.