Guild · New Jersey · BBS 2025 Release · 1966–2024
Aerial Insectivores In New Jersey
17 species in this guild. As a group they are -10% since 1968.
Guild Signals
No notable trend signals for aerial insectivores in New Jersey. See the full index history below.
Forecast
If the recent trend holds, Aerial insectivores in New Jersey is projected to stay roughly flat through 2029, near 2.8 (95% range 1.9–3.7). A 5-year backtest shows a typical error of ±17%, with 80% of held-out values landing inside the 95% band.
-10%Change by 2029
2.8Projected 2029 index
1.9–3.795% range
±17%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 2.8 | 1.9 | 3.7 |
| 2026 | 2.8 | 1.9 | 3.7 |
| 2027 | 2.8 | 1.9 | 3.7 |
| 2028 | 2.8 | 1.9 | 3.7 |
| 2029 | 2.8 | 1.9 | 3.7 |
Member Species In New Jersey
| Eastern Whip-poor-will | Caprimulgidae | -77% |
| Bank Swallow | Hirundinidae | -67% |
| Purple Martin | Hirundinidae | -58% |
| Least Flycatcher | Tyrannidae | -52% |
| Eastern Kingbird | Tyrannidae | -50% |
| Cliff Swallow | Hirundinidae | -48% |
| Barn Swallow | Hirundinidae | -16% |
| Alder Flycatcher | Tyrannidae | -10% |
| Chimney Swift | Apodidae | -6% |
| Great Crested Flycatcher | Tyrannidae | +1% |
| Common Nighthawk | Caprimulgidae | +9% |
| Tree Swallow | Hirundinidae | +40% |
| Northern Rough-winged Swallow | Hirundinidae | +52% |
| Willow Flycatcher | Tyrannidae | +78% |
| Eastern Phoebe | Tyrannidae | +186% |
| Eastern Wood-Pewee | Tyrannidae | +384% |
| Acadian Flycatcher | Tyrannidae | +459% |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.