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

Waterfowl In Maine

All statesMaine

9 species in this guild. As a group they are +109% since 1968.

Guild Signals

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

Forecast

If the recent trend holds, Waterfowl in Maine is projected to fall about 42% by 2029 — from 1.7 in 2024 to a central estimate of 1.0 (95% range 0.23–1.8). A 5-year backtest shows a typical error of ±66.9%, with 0% of held-out values landing inside the 95% band.

-42%Change by 2029
1.0Projected 2029 index
0.23–1.895% range
±66.9%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
20250.940.171.7
20260.960.191.7
20270.970.201.7
20280.990.211.8
20291.00.231.8

Member Species In Maine

Waterfowl species in Maine.
Common GoldeneyeAnatidae-93%
American Black DuckAnatidae-88%
Ring-necked DuckAnatidae-64%
Wood DuckAnatidae+7%
Common MerganserAnatidae+67%
Hooded MerganserAnatidae+233%
Canada GooseAnatidae+623%
MallardAnatidae14×
Common EiderAnatidae26×

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