Guild · New Hampshire · BBS 2025 Release · 1966–2024
Waterfowl In New Hampshire
6 species in this guild. As a group they are +162% since 1968.
Guild Signals
No notable trend signals for waterfowl in New Hampshire. See the full index history below.
Forecast
If the recent trend holds, Waterfowl in New Hampshire is projected to stay roughly flat through 2029, near 1.1 (95% range 0.55–1.7). A 5-year backtest shows a typical error of ±10.3%, with 100% of held-out values landing inside the 95% band.
-8%Change by 2029
1.1Projected 2029 index
0.55–1.795% range
±10.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 1.1 | 0.49 | 1.7 |
| 2026 | 1.1 | 0.51 | 1.7 |
| 2027 | 1.1 | 0.52 | 1.7 |
| 2028 | 1.1 | 0.54 | 1.7 |
| 2029 | 1.1 | 0.55 | 1.7 |
Member Species In New Hampshire
| American Black Duck | Anatidae | -89% |
| Hooded Merganser | Anatidae | +15% |
| Wood Duck | Anatidae | +49% |
| Common Merganser | Anatidae | +130% |
| Mallard | Anatidae | +203% |
| Canada Goose | Anatidae | 11× |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.