Guild
Aerial Insectivores
50 species tracked. As a group, aerial insectivores are -40%Guild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology → since 1968.
Guild SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →
No notable trend signals for aerial insectivores. See the full index history below.
Aerial Insectivores Population Forecast
If the recent trend holds, Aerial insectivores as a group is projected to stay roughly flat through 2030, near 1.2 (95% range 0.83–1.7). A 5-year backtest shows a typical error of ±4.5%, with 100% of held-out values landing inside the 95% band.
1.2Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
Aerial Insectivores By State
| Guild trendA mean-index aggregate across the species in this group — the structural direction of the guild, with individual-species noise smoothed out.Full methodology → | ||
|---|---|---|
| Maine | -72% | 18 |
| Alaska | -67% | 12 |
| New Hampshire | -56% | 18 |
| Vermont | -54% | 16 |
| West Virginia | -43% | 16 |
| Washington | -41% | 22 |
| Idaho | -40% | 22 |
| South Carolina | -36% | 14 |
| Oregon | -34% | 22 |
| Massachusetts | -28% | 15 |
| Wyoming | -27% | 21 |
| Virginia | -26% | 17 |
| Wisconsin | -25% | 19 |
| Michigan | -24% | 19 |
| Connecticut | -22% | 16 |
| Colorado | -21% | 23 |
| North Carolina | -21% | 17 |
| Florida | -19% | 12 |
| New York | -18% | 19 |
| Utah | -16% | 22 |
| Georgia | -15% | 15 |
| Kentucky | -11% | 16 |
| California | -11% | 24 |
| Texas | -10% | 32 |
| Pennsylvania | -10% | 17 |
| Arizona | -8% | 28 |
| New Jersey | -4% | 17 |
| Arkansas | -1% | 17 |
| Missouri | -1% | 18 |
| Alabama | +2% | 15 |
| Louisiana | +4% | 14 |
| New Mexico | +7% | 27 |
| Nebraska | +10% | 17 |
| Kansas | +14% | 19 |
| South Dakota | +14% | 20 |
| Ohio | +15% | 17 |
| Minnesota | +18% | 19 |
| Montana | +20% | 21 |
| Tennessee | +24% | 17 |
| Illinois | +27% | 17 |
| Maryland | +27% | 18 |
| Oklahoma | +35% | 21 |
| Mississippi | +44% | 14 |
| Indiana | +45% | 18 |
| Iowa | +57% | 17 |
| Nevada | +64% | 18 |
| North Dakota | +69% | 18 |
| Rhode Island | +72% | 11 |
| Delaware | +177% | 15 |