Guild · West Virginia · BBS 2025 Release · 1966–2024
Aerial Insectivores In West Virginia
16 species in this guild. As a group they are -43% since 1968.
Guild Signals
guild collapsecomputed index
Aerial insectivores as a group have declined in West Virginia, down 43% since 1968.
Forecast
If the recent trend holds, Aerial insectivores in West Virginia is projected to rise about 13% by 2029 — from 2.8 in 2024 to a central estimate of 3.1 (95% range 0.58–5.6). A 5-year backtest shows a typical error of ±10.2%, with 100% of held-out values landing inside the 95% band.
+13%Change by 2029
3.1Projected 2029 index
0.58–5.695% range
±10.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 3.2 | 0.66 | 5.7 |
| 2026 | 3.2 | 0.64 | 5.7 |
| 2027 | 3.1 | 0.62 | 5.7 |
| 2028 | 3.1 | 0.60 | 5.6 |
| 2029 | 3.1 | 0.58 | 5.6 |
Member Species In West Virginia
| Bank Swallow | Hirundinidae | -97% |
| Cliff Swallow | Hirundinidae | -94% |
| Eastern Whip-poor-will | Caprimulgidae | -80% |
| Chimney Swift | Apodidae | -71% |
| Great Crested Flycatcher | Tyrannidae | -67% |
| Purple Martin | Hirundinidae | -66% |
| Barn Swallow | Hirundinidae | -35% |
| Eastern Kingbird | Tyrannidae | -25% |
| Eastern Wood-Pewee | Tyrannidae | -23% |
| Willow Flycatcher | Tyrannidae | -23% |
| Acadian Flycatcher | Tyrannidae | -7% |
| Northern Rough-winged Swallow | Hirundinidae | -5% |
| Eastern Phoebe | Tyrannidae | +5% |
| Alder Flycatcher | Tyrannidae | +282% |
| Least Flycatcher | Tyrannidae | +573% |
| Tree Swallow | Hirundinidae | 23× |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.