Guild · Connecticut · BBS 2025 Release · 1966–2024
Aerial Insectivores In Connecticut
16 species in this guild. As a group they are -29% since 1968.
Guild Signals
No notable trend signals for aerial insectivores in Connecticut. See the full index history below.
Forecast
If the recent trend holds, Aerial insectivores in Connecticut is projected to stay roughly flat through 2029, near 3.0 (95% range 1.9–4.1). A 5-year backtest shows a typical error of ±17.8%, with 100% of held-out values landing inside the 95% band.
-4%Change by 2029
3.0Projected 2029 index
1.9–4.195% range
±17.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 3.1 | 1.9 | 4.2 |
| 2026 | 3.0 | 1.9 | 4.2 |
| 2027 | 3.0 | 1.9 | 4.1 |
| 2028 | 3.0 | 1.9 | 4.1 |
| 2029 | 3.0 | 1.9 | 4.1 |
Member Species In Connecticut
| Least Flycatcher | Tyrannidae | -84% |
| Eastern Kingbird | Tyrannidae | -79% |
| Eastern Whip-poor-will | Caprimulgidae | -64% |
| Cliff Swallow | Hirundinidae | -42% |
| Purple Martin | Hirundinidae | -22% |
| Tree Swallow | Hirundinidae | +13% |
| Eastern Phoebe | Tyrannidae | +16% |
| Barn Swallow | Hirundinidae | +18% |
| Great Crested Flycatcher | Tyrannidae | +28% |
| Willow Flycatcher | Tyrannidae | +30% |
| Eastern Wood-Pewee | Tyrannidae | +31% |
| Chimney Swift | Apodidae | +34% |
| Alder Flycatcher | Tyrannidae | +66% |
| Bank Swallow | Hirundinidae | +77% |
| Acadian Flycatcher | Tyrannidae | +121% |
| Northern Rough-winged Swallow | Hirundinidae | +295% |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.