Guild · Montana · BBS 2025 Release · 1966–2024
Wetland Birds In Montana
18 species in this guild. As a group they are +103% since 1970.
Guild Signals
No notable trend signals for wetland birds in Montana. See the full index history below.
Forecast
If the recent trend holds, Wetland birds in Montana is projected to fall about 15% by 2029 — from 1.5 in 2024 to a central estimate of 1.3 (95% range 0.00–2.5). A 5-year backtest shows a typical error of ±31.3%, with 100% of held-out values landing inside the 95% band.
-15%Change by 2029
1.3Projected 2029 index
0.00–2.595% range
±31.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 1.2 | 0.00 | 2.5 |
| 2026 | 1.2 | 0.00 | 2.5 |
| 2027 | 1.3 | 0.00 | 2.5 |
| 2028 | 1.3 | 0.00 | 2.5 |
| 2029 | 1.3 | 0.00 | 2.5 |
Member Species In Montana
| Common Tern | Laridae | -83% |
| Red-necked Grebe | Podicipedidae | -80% |
| Black Tern | Laridae | -71% |
| Great Blue Heron | Ardeidae | -57% |
| California Gull | Laridae | -51% |
| Sora | Rallidae | -36% |
| Pied-billed Grebe | Podicipedidae | -27% |
| American Bittern | Ardeidae | -13% |
| Common Loon | Gaviidae | -9% |
| Virginia Rail | Rallidae | +47% |
| Eared Grebe | Podicipedidae | +49% |
| American Coot | Rallidae | +62% |
| Western Grebe | Podicipedidae | +89% |
| Franklin's Gull | Laridae | +184% |
| Double-crested Cormorant | Phalacrocoracidae | +400% |
| Ring-billed Gull | Laridae | 11× |
| Sandhill Crane | Gruidae | 16× |
| American White Pelican | Pelecanidae | 18× |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.