Guild · Vermont · BBS 2025 Release · 1966–2024
Wetland Birds In Vermont
8 species in this guild. As a group they are +121% since 1968.
Guild Signals
No notable trend signals for wetland birds in Vermont. See the full index history below.
Forecast
If the recent trend holds, Wetland birds in Vermont is projected to rise about 82% by 2029 — from 0.88 in 2024 to a central estimate of 1.6 (95% range 0.00–5.2). A 5-year backtest shows a typical error of ±311.6%, with 100% of held-out values landing inside the 95% band.
+82%Change by 2029
1.6Projected 2029 index
0.00–5.295% range
±311.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 1.6 | 0.00 | 5.2 |
| 2026 | 1.6 | 0.00 | 5.2 |
| 2027 | 1.6 | 0.00 | 5.2 |
| 2028 | 1.6 | 0.00 | 5.2 |
| 2029 | 1.6 | 0.00 | 5.2 |
Member Species In Vermont
| Green Heron | Ardeidae | -72% |
| Virginia Rail | Rallidae | -64% |
| Double-crested Cormorant | Phalacrocoracidae | -42% |
| Herring Gull | Laridae | -14% |
| American Bittern | Ardeidae | -2% |
| Great Blue Heron | Ardeidae | +15% |
| Common Loon | Gaviidae | +316% |
| Ring-billed Gull | Laridae | +828% |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.