Guild · Massachusetts · BBS 2025 Release · 1966–2024
Aerial Insectivores In Massachusetts
15 species in this guild. As a group they are -32% since 1968.
Guild Signals
No notable trend signals for aerial insectivores in Massachusetts. See the full index history below.
Forecast
If the recent trend holds, Aerial insectivores in Massachusetts is projected to fall about 20% by 2029 — from 3.2 in 2024 to a central estimate of 2.5 (95% range 1.8–3.2). A 5-year backtest shows a typical error of ±17.8%, with 60% of held-out values landing inside the 95% band.
-20%Change by 2029
2.5Projected 2029 index
1.8–3.295% range
±17.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 2.6 | 1.9 | 3.3 |
| 2026 | 2.6 | 1.9 | 3.3 |
| 2027 | 2.6 | 1.9 | 3.3 |
| 2028 | 2.6 | 1.9 | 3.3 |
| 2029 | 2.5 | 1.8 | 3.2 |
Member Species In Massachusetts
| Eastern Whip-poor-will | Caprimulgidae | -81% |
| Eastern Kingbird | Tyrannidae | -68% |
| Cliff Swallow | Hirundinidae | -61% |
| Chimney Swift | Apodidae | -56% |
| Bank Swallow | Hirundinidae | -53% |
| Barn Swallow | Hirundinidae | -44% |
| Tree Swallow | Hirundinidae | -26% |
| Least Flycatcher | Tyrannidae | -25% |
| Great Crested Flycatcher | Tyrannidae | -5% |
| Northern Rough-winged Swallow | Hirundinidae | +24% |
| Eastern Wood-Pewee | Tyrannidae | +66% |
| Eastern Phoebe | Tyrannidae | +99% |
| Willow Flycatcher | Tyrannidae | +404% |
| Alder Flycatcher | Tyrannidae | +737% |
| Purple Martin | Hirundinidae | 13× |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.