Guild · California · BBS 2025 Release · 1966–2024
Waterfowl In California
17 species in this guild. As a group they are +65% since 1970.
Guild Signals
No notable trend signals for waterfowl in California. See the full index history below.
Forecast
If the recent trend holds, Waterfowl in California is projected to rise about 101% by 2029 — from 0.78 in 2024 to a central estimate of 1.6 (95% range 0.46–2.7). A 5-year backtest shows a typical error of ±122.2%, with 60% of held-out values landing inside the 95% band.
+101%Change by 2029
1.6Projected 2029 index
0.46–2.795% range
±122.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 1.5 | 0.42 | 2.6 |
| 2026 | 1.5 | 0.43 | 2.6 |
| 2027 | 1.5 | 0.44 | 2.7 |
| 2028 | 1.6 | 0.45 | 2.7 |
| 2029 | 1.6 | 0.46 | 2.7 |
Member Species In California
| Cinnamon Teal | Anatidae | -79% |
| American Wigeon | Anatidae | -75% |
| Northern Pintail | Anatidae | -59% |
| Common Merganser | Anatidae | -53% |
| Canvasback | Anatidae | -9% |
| Northern Shoveler | Anatidae | +20% |
| Lesser Scaup | Anatidae | +24% |
| Wood Duck | Anatidae | +24% |
| Ruddy Duck | Anatidae | +42% |
| Bufflehead | Anatidae | +112% |
| Redhead | Anatidae | +122% |
| Mallard | Anatidae | +135% |
| Blue-winged Teal | Anatidae | +165% |
| Green-winged Teal | Anatidae | +235% |
| Canada Goose | Anatidae | +524% |
| Ring-necked Duck | Anatidae | +903% |
| Gadwall | Anatidae | 11× |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.