BirdAnalyst
Species · BCR 20 · BBS 2025 Release · 1966–2024

Black-bellied Whistling-Duck In Edwards Plateau

All regionsEdwards PlateauWaterfowl

Black-bellied Whistling-Duck in Edwards Plateau has edged down: down 15% on the route-weighted index since 1994.

-15%Since 1994
9Routes In Region
21Years

Notable Signals

No notable trend signals for Black-bellied Whistling-Duck in Edwards Plateau. See the full index history below.

Forecast

If the recent trend holds, Black-bellied Whistling-Duck in Edwards Plateau is projected to fall about 23% by 2028 — from 0.44 in 2023 to a central estimate of 0.34 (95% range 0.00–0.81). A 5-year backtest shows a typical error of ±162.9%, with 100% of held-out values landing inside the 95% band.

-23%Change by 2028
0.34Projected 2028 index
0.00–0.8195% range
±162.9%Backtest error
19882028
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
20240.330.000.80
20250.330.000.80
20260.330.000.81
20270.340.000.81
20280.340.000.81

Routes In Edwards Plateau

Routes recording Black-bellied Whistling-Duck in Edwards Plateau.
PidcokeTEXAS42010
AdamsvilleTEXAS32023
MontellTEXAS32023
Prairie Mtn.TEXAS32018
BoerneTEXAS22016
Valley SpgsTEXAS22015
Dripping SpgTEXAS22018
UtopiaTEXAS12023
San SabaTEXAS12017

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