BirdAnalyst
Guild · Maryland · BBS 2025 Release · 1966–2024

Waterfowl In Maryland

All statesMaryland

5 species in this guild. As a group they are +606% since 1968.

Guild Signals

No notable trend signals for waterfowl in Maryland. See the full index history below.

Forecast

If the recent trend holds, Waterfowl in Maryland is projected to rise about 47% by 2029 — from 3.0 in 2024 to a central estimate of 4.5 (95% range 2.6–6.3). A 5-year backtest shows a typical error of ±42.1%, with 100% of held-out values landing inside the 95% band.

+47%Change by 2029
4.5Projected 2029 index
2.6–6.395% range
±42.1%Backtest error
19662029
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
20254.22.36.1
20264.32.46.1
20274.32.46.2
20284.42.56.3
20294.52.66.3

Member Species In Maryland

Waterfowl species in Maryland.
American Black DuckAnatidae-48%
MallardAnatidae+29%
Mute SwanAnatidae+73%
Wood DuckAnatidae+329%
Canada GooseAnatidae231×

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