BirdAnalyst
Species · BCR 36 · BBS 2025 Release · 1966–2024

Mottled Duck In Tamaulipan Brushlands

All regionsTamaulipan BrushlandsWaterfowl

Mottled Duck in Tamaulipan Brushlands has declined: down 41% on the route-weighted index since 1973.

-41%Since 1973
14Routes In Region
51Years

Notable Signals

No notable trend signals for Mottled Duck in Tamaulipan Brushlands. See the full index history below.

Forecast

If the recent trend holds, Mottled Duck in Tamaulipan Brushlands is projected to rise about 223% by 2029 — from 0.08 in 2024 to a central estimate of 0.27 (95% range 0.00–1.3). A 5-year backtest shows a typical error of ±78.8%, with 100% of held-out values landing inside the 95% band.

+223%Change by 2029
0.27Projected 2029 index
0.00–1.395% range
±78.8%Backtest error
19692029
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
20250.310.001.4
20260.300.001.3
20270.290.001.3
20280.280.001.3
20290.270.001.3

Routes In Tamaulipan Brushlands

Routes recording Mottled Duck in Tamaulipan Brushlands.
HondoTEXAS62021
RaymondvilleTEXAS62023
Agua NuevaTEXAS32009
ProgresoTEXAS32011
Millett 2TEXAS32016
Mirando CityTEXAS22012
George WestTEXAS22022
El SauzTEXAS22014
KingsvilleTEXAS12019
CatarinaTEXAS12006
Encinal 2TEXAS12023
Catarina 3TEXAS12018
SejitaTEXAS12022
HeidelbergTEXAS12024

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