Guild · Montana · BBS 2025 Release · 1966–2024
Aerial Insectivores In Montana
21 species in this guild. As a group they are +16% since 1970.
Guild Signals
No notable trend signals for aerial insectivores in Montana. See the full index history below.
Forecast
If the recent trend holds, Aerial insectivores in Montana is projected to stay roughly flat through 2029, near 3.0 (95% range 1.8–4.2). A 5-year backtest shows a typical error of ±6.5%, with 100% of held-out values landing inside the 95% band.
+1%Change by 2029
3.0Projected 2029 index
1.8–4.295% range
±6.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 3.0 | 1.8 | 4.2 |
| 2026 | 3.0 | 1.8 | 4.2 |
| 2027 | 3.0 | 1.8 | 4.2 |
| 2028 | 3.0 | 1.8 | 4.2 |
| 2029 | 3.0 | 1.8 | 4.2 |
Member Species In Montana
| Bank Swallow | Hirundinidae | -75% |
| Cassin's Kingbird | Tyrannidae | -66% |
| Black Swift | Apodidae | -62% |
| Vaux's Swift | Apodidae | -41% |
| Barn Swallow | Hirundinidae | -18% |
| Willow Flycatcher | Tyrannidae | -17% |
| Chimney Swift | Apodidae | -11% |
| Olive-sided Flycatcher | Tyrannidae | +16% |
| Common Nighthawk | Caprimulgidae | +24% |
| Northern Rough-winged Swallow | Hirundinidae | +25% |
| Eastern Kingbird | Tyrannidae | +40% |
| Cliff Swallow | Hirundinidae | +43% |
| Violet-green Swallow | Hirundinidae | +69% |
| Western Kingbird | Tyrannidae | +74% |
| Tree Swallow | Hirundinidae | +112% |
| White-throated Swift | Apodidae | +179% |
| Say's Phoebe | Tyrannidae | +266% |
| Western Wood-Pewee | Tyrannidae | +329% |
| Hammond's Flycatcher | Tyrannidae | +351% |
| Dusky Flycatcher | Tyrannidae | +538% |
| Least Flycatcher | Tyrannidae | +821% |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.