Guild · Colorado · BBS 2025 Release · 1966–2024
Waterfowl In Colorado
14 species in this guild. As a group they are -2% since 1970.
Guild Signals
No notable trend signals for waterfowl in Colorado. See the full index history below.
Forecast
If the recent trend holds, Waterfowl in Colorado is projected to rise about 23% by 2029 — from 0.69 in 2024 to a central estimate of 0.85 (95% range 0.33–1.4). A 5-year backtest shows a typical error of ±14.9%, with 100% of held-out values landing inside the 95% band.
+23%Change by 2029
0.85Projected 2029 index
0.33–1.495% range
±14.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.85 | 0.33 | 1.4 |
| 2026 | 0.85 | 0.33 | 1.4 |
| 2027 | 0.85 | 0.33 | 1.4 |
| 2028 | 0.85 | 0.33 | 1.4 |
| 2029 | 0.85 | 0.33 | 1.4 |
Member Species In Colorado
| Northern Pintail | Anatidae | -91% |
| Ring-necked Duck | Anatidae | -47% |
| Green-winged Teal | Anatidae | -36% |
| Cinnamon Teal | Anatidae | -32% |
| Redhead | Anatidae | -17% |
| Mallard | Anatidae | -11% |
| American Wigeon | Anatidae | -5% |
| Blue-winged Teal | Anatidae | +17% |
| Northern Shoveler | Anatidae | +42% |
| Ruddy Duck | Anatidae | +120% |
| Gadwall | Anatidae | +128% |
| Common Merganser | Anatidae | +232% |
| Canada Goose | Anatidae | +329% |
| Lesser Scaup | Anatidae | +568% |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.