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

Waterfowl In Delaware

All statesDelaware

4 species in this guild. As a group they are 22× since 1968.

Guild Signals

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

Forecast

If the recent trend holds, Waterfowl in Delaware is projected to fall about 41% by 2029 — from 16 in 2024 to a central estimate of 9.5 (95% range 4.1–15). A 5-year backtest shows a typical error of ±48.7%, with 80% of held-out values landing inside the 95% band.

-41%Change by 2029
9.5Projected 2029 index
4.1–1595% range
±48.7%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
20258.93.514
20269.03.614
20279.23.815
20289.44.015
20299.54.115

Member Species In Delaware

Waterfowl species in Delaware.
MallardAnatidae+20%
American Black DuckAnatidae+45%
Wood DuckAnatidae+73%
Canada GooseAnatidae54×

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